阅读说明：本技术 一种多自由度的塑料配件固定装置 (Multi freedom's plastics accessory fixing device ) 是由 刘二稳 于 2021-09-01 设计创作，主要内容包括：本发明涉及塑料配件加工技术领域,且公开了一种多自由度的塑料配件固定装置,包括调节机构,所述调节机构包括外圆环,所述外圆环的外围活动连接有弧块一,所述弧块一的内壁转动连接有转座,所述外圆环的中部转动连接有内圆环,所述内圆环的外围活动连接有弧块二。该多自由度的塑料配件固定装置,通过根据配件外形,调节外圆环和内圆环相对角度以选择夹持平面,并上下滑动弧块一和弧块二调节夹持宽度,管件夹持后滑动盘上移锁定管件夹持平面,增加固定设备使用范围,通过螺杆转动使活动块向转盘一侧移动,在连杆一传动下,铰杆之间相对角度变大,使定位块逐渐向外展开,同时辅助块辅助贴紧管件内壁,避免管件外围出现破损。(The invention relates to the technical field of plastic accessory processing, and discloses a multi-degree-of-freedom plastic accessory fixing device which comprises an adjusting mechanism, wherein the adjusting mechanism comprises an outer circular ring, the periphery of the outer circular ring is movably connected with a first arc block, the inner wall of the first arc block is rotatably connected with a rotating seat, the middle part of the outer circular ring is rotatably connected with an inner circular ring, and the periphery of the inner circular ring is movably connected with a second arc block. This multi freedom's plastics accessory fixing device, through according to the accessory appearance, adjust outer ring and interior ring relative angle in order to select the centre gripping plane, and slide arc piece one from top to bottom and arc piece two adjusts the centre gripping width, the pipe fitting centre gripping back slide disk moves up and locks pipe fitting centre gripping plane, increase fixed equipment application range, rotate through the screw rod and make the movable block move to carousel one side, under the transmission of connecting rod one, relative angle grow between the hinge rod, make the locating piece outwards expand gradually, the supplementary tight pipe fitting inner wall of pasting of while, avoid the pipe fitting periphery to appear damaged.)

1. The utility model provides a multi freedom's plastic accessories fixing device, includes adjustment mechanism (2), its characterized in that: adjustment mechanism (2) include outer ring (201), the peripheral swing joint of outer ring (201) has arc piece (202), the inner wall of arc piece (202) rotates and is connected with swivel mount (203), the middle part of outer ring (201) rotates and is connected with interior ring (204), the peripheral swing joint of interior ring (204) has arc piece two (205), the below of interior ring (204) is provided with sliding disk (206), draw-in groove (207) have been seted up on the top left side of sliding disk (206), draw-in groove (208) have been seted up down to the bottom of sliding disk (206), the bottom elastic connection of sliding disk (206) has spring one (209), the tip limit connection of sliding disk (206) has gag lever post (210).

2. The multiple degree of freedom plastic accessory fixture device of claim 1, wherein: the inside cavity of outer ring (201) and interior ring (204), the vertical central line of outer ring (201) rotates and is connected with interior ring (204), the quantity of arc piece (202) is two sets of, swivel mount (203) divide into two sets ofly, and a set of rotation is connected at the inner wall of arc piece (202), and another group rotates the inner wall of connecting at arc piece two (205).

3. The multiple degree of freedom plastic accessory fixture device of claim 1, wherein: the middle of the sliding disc (206) is hollow, the inner portion of the upper clamping groove (207) is matched with the bottom of the inner circular ring (204), the inner portion of the lower clamping groove (208) is matched with the bottom of the outer circular ring (201), and the limiting rods (210) are symmetrically distributed on the front, back, left and right sides of the sliding disc (206).

4. The multiple degree of freedom plastic accessory fixture device of claim 1, wherein: still include fixed establishment (3), fixed establishment (3) are including ring slot seat (31), the middle part of ring slot seat (31) is rotated and is connected with carousel (32), the one end that carousel (32) were kept away from in ring slot seat (31) articulates there is hinge bar (33), the one end that hinge bar (33) are close carousel (32) articulates there is connecting rod one (34), the other end of connecting rod one (34) articulates there is movable block (35), the internal thread of movable block (35) is connected with screw rod (36), the one end that carousel (32) were kept away from in hinge bar (33) articulates there is locating piece (37), the inside limit connection of locating piece (37) has auxiliary block (38).

5. The multiple degree of freedom plastic accessory fixture device of claim 4, wherein: one end fixedly connected with swivel mount (203) of carousel (32) is kept away from in ring groove seat (31), and the periphery of ring groove seat (31) is seted up slottedly, the center of ring groove seat (31) is rotated and is connected with screw rod (36), the peripheral articulated of movable block (35) has connecting rod one (34), through supplementary piece (38) limit connection between locating piece (37), locating piece (37) and supplementary piece (38) adopt flexible material to make.

6. The multiple degree of freedom plastic accessory fixture device of claim 1, wherein: still include base (1), the top of base (1) is rotated and is connected with adjustment mechanism (2), the inside fixedly connected with fixed establishment (3) of adjustment mechanism (2), the top of base (1) is provided with plastics pipe fitting (4).

7. The multiple degree of freedom plastic accessory fixture device of claim 6, wherein: the top of base (1) is rotated and is connected with outer ring (201), the bottom fixedly connected with gag lever post (210) of base (1), fixed establishment (3) fixed connection is close the one end in outer ring (201) axle center in swivel mount (203), plastics pipe fitting (4) are located inner wall one side of outer ring (201) and inner ring (204).

Technical Field

The invention relates to the technical field of plastic accessory processing, in particular to a multi-degree-of-freedom plastic accessory fixing device.

Background

The fittings refer to parts or components of assembly machinery and parts or components reinstalled after being damaged, the fittings can be divided into standard fittings and optional fittings, the plastic fittings are widely used due to low cost, strong plasticity and good rigidity and strength, the plastic fittings comprise plastic pipe fittings joints, the fittings need to be fixed when the plastic fittings are processed, the conventional fixing device can only lock the axial movement and rotation of the fittings in the XYZ three directions, the fittings at special angles cannot be effectively fixed, and special clamps need to be arranged for fixing and clamping, so that the processing cost is increased, the application range of clamping equipment is reduced, the plastic pipes fix the periphery of the pipes through clamping jaws, the pipe wall thickness is reduced along with the increase of the radius of the clamped pipes, the clamping area of the clamping jaws is unchanged, and the periphery of the pipes can be damaged along with the clamping of the clamping jaws, the defective rate of products is improved, and the practicability of the equipment is reduced.

In order to solve the problems, the inventor provides a multi-degree-of-freedom plastic accessory fixing device, the relative angle of an outer ring and an inner ring is adjusted according to the appearance of an accessory to select a clamping plane, an arc block I and an arc block II are slid up and down to adjust the clamping width, a sliding disc moves up to lock the clamping plane of a pipe after the pipe is clamped, the application range of fixing equipment is enlarged, a movable block moves to one side of a turntable through the rotation of a screw rod, the relative angle between hinge rods is enlarged under the transmission of a connecting rod I, a positioning block is gradually expanded outwards, and meanwhile an auxiliary block is used for assisting in clinging the inner wall of the pipe, so that the periphery of the pipe is prevented from being damaged.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a multi-degree-of-freedom plastic accessory fixing device which has the advantages of being capable of fixing accessories in any plane and in multiple degrees of freedom and assisting in tensioning and clamping the inner wall of the accessories from inside to outside, and solves the problem that the degree of freedom of equipment for fixing plastic accessories can only cause damage when clamping the periphery of a plastic pipe in XYZ three axes and clamping jaws.

In order to achieve the purpose of fixing the accessory in any plane and with multiple degrees of freedom and assisting in tensioning and clamping the inner wall of the accessory from inside to outside, the invention provides the following technical scheme: the utility model provides a multi freedom's plastic accessories fixing device, includes adjustment mechanism, adjustment mechanism includes outer ring, the peripheral swing joint of outer ring has arc piece one, the inner wall of arc piece one rotates and is connected with the swivel mount, the middle part of outer ring rotates and is connected with interior ring, the peripheral swing joint of interior ring has arc piece two, the below of interior ring is provided with the sliding tray, the draw-in groove has been seted up on the top left side of sliding tray, the draw-in groove has been seted up down to the bottom of sliding tray, the bottom elastic connection of sliding tray has spring one, the tip limit connection of sliding tray has the gag lever post.

Preferably, the inside cavity of outer ring and interior ring, the vertical central line of outer ring rotates and is connected with interior ring, the quantity of arc piece one is two sets of, the swivel mount divide into two sets ofly, and a set of rotation is connected at the inner wall of arc piece one, and another group rotates the inner wall of connecting at arc piece two, adjusts centre gripping section angle through the rotation of outer ring and interior ring and the relative movement of arc piece one and arc piece two.

Preferably, the middle part of the sliding disc is hollow, the inner part of the upper clamping groove is matched with the bottom of the inner circular ring, the inner part of the lower clamping groove is matched with the bottom of the outer circular ring, the limiting rods are symmetrically distributed on the front, back, left and right sides of the sliding disc, and the angles of the outer circular ring and the inner circular ring are elastically locked by the sliding disc under the elastic force of the spring.

Preferably, still include fixed establishment, fixed establishment includes the ring channel seat, the middle part of ring channel seat rotates and is connected with the carousel, the ring channel seat is kept away from the one end of carousel and is articulated to have a hinge bar, the one end that the hinge bar is close to the carousel articulates there is connecting rod one, the other end of connecting rod one articulates there is the movable block, the inside threaded connection of movable block has the screw rod, the hinge bar is kept away from the one end of carousel and is articulated to have the locating piece, the inside limit connection of locating piece has the auxiliary block.

Preferably, one end, far away from the carousel, of the ring groove seat is fixedly connected with a swivel base, the periphery of the ring groove seat is provided with a groove, the center of the ring groove seat is rotatably connected with a screw rod, the periphery of the movable block is hinged with a first connecting rod, the positioning blocks are in limit connection through an auxiliary block, the positioning blocks and the auxiliary block are made of flexible materials, the relative angle of the hinge rod is changed through the movement of the movable block and the transmission of the first connecting rod, and then the relative distance of the positioning blocks is controlled.

Preferably, still include the base, the top of base is rotated and is connected with adjustment mechanism, adjustment mechanism's inside fixedly connected with fixed establishment, the top of base is provided with the plastics pipe fitting.

Preferably, the top of base is rotated and is connected with the outer ring, the bottom fixedly connected with gag lever post of base, fixed establishment fixed connection is close the one end in outer ring axle center at the swivel mount, the plastics pipe fitting is located inner wall one side of outer ring and interior ring, provides the condition for fixed establishment centre gripping plastics pipe fitting.

Advantageous effects

Compared with the prior art, the invention provides a multi-degree-of-freedom plastic accessory fixing device, which has the following beneficial effects:

1. this multi freedom's plastic accessories fixing device, top through the base rotates and is connected with the outer ring, when fixing the plastic accessories, push down the sliding tray and make the outer ring break away from draw-in groove down, the inner ring breaks away from last draw-in groove, according to the actual appearance of accessory, adjust the relative angle of outer ring and inner ring and in order to select the clamping plane, slide arc piece one and arc piece two from top to bottom, make between arc piece one and the arc piece two centers apart from with accessory width phase-match, release pushing down the sliding tray after treating the pipe fitting centre gripping, receive the spacing of a spring elastic action and gag lever post, the sliding tray shifts up and makes inner ring bottom and outer ring bottom block go into draw-in groove and draw-in groove down respectively, with locking pipe fitting clamping plane, thereby reach the effect that can arbitrary plane and multi freedom fixed accessories, increase fixed equipment's application range.

2. The multi-degree-of-freedom plastic accessory fixing device is characterized in that a rotary disc is rotatably connected to the middle of a ring groove seat, a plastic pipe fitting is sleeved on the periphery of a positioning block and the rotary disc is gradually rotated, a screw rod rotates along with the rotary disc to enable a movable block to move to one side of the rotary disc, the relative angle between hinge rods is increased under the transmission of a first connecting rod, the positioning block hinged to the bottom of the hinge rod is gradually unfolded outwards, the axis of the pipe fitting is positioned, meanwhile, auxiliary blocks in limiting connection with the left side and the right side of the positioning block are gradually unfolded to assist in clinging to the inner wall of the pipe fitting, the effect of assisting in tensioning of the inner wall of an accessory from inside to outside is achieved, and the periphery of the pipe fitting is prevented from being damaged.

Drawings

FIG. 1 is a schematic view of the exterior of the adjustment mechanism of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic view of the unlock adjustment of the present invention;

FIG. 4 is an enlarged view of the securing mechanism of the present invention;

FIG. 5 is a schematic view of the adjustment of the securing mechanism of the present invention;

FIG. 6 is an enlarged view of the structure of FIG. 2A according to the present invention;

fig. 7 is a top view of the sliding disk structure of the present invention.

In the figure: 1. a base; 2. an adjustment mechanism; 201. an outer ring; 202. a first arc block; 203. rotating; 204. an inner circular ring; 205. a second arc block; 206. a sliding disk; 207. an upper clamping groove; 208. a lower clamping groove; 209. a first spring; 210. a limiting rod; 3. a fixing mechanism; 31. a ring groove seat; 32. a turntable; 33. a hinge rod; 34. a first connecting rod; 35. a movable block; 36. a screw; 37. positioning blocks; 38. an auxiliary block; 4. a plastic pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1, 2, 3 and 7, a multi-degree-of-freedom plastic accessory fixing device comprises an adjusting mechanism 2, wherein the adjusting mechanism 2 comprises an outer ring 201, the periphery of the outer ring 201 is movably connected with a first arc block 202, the inner wall of the first arc block 202 is rotatably connected with a rotating base 203, the middle part of the outer ring 201 is rotatably connected with an inner ring 204, the periphery of the inner ring 204 is movably connected with a second arc block 205, a sliding disc 206 is arranged below the inner ring 204, the left side of the top of the sliding disc 206 is provided with an upper clamping groove 207, the bottom of the sliding disc 206 is provided with a lower clamping groove 208, the bottom end of the sliding disc 206 is elastically connected with a first spring 209, the end part of the sliding disc 206 is limited and connected with a limiting rod 210, the inner parts of the outer ring 201 and the inner ring 204 are hollow, the vertical central line of the outer ring 201 is rotatably connected with the inner ring 204, the number of the first arc blocks 202 is two rotating bases, 203 is divided into two sets, one set is rotatably connected with the inner wall of the first arc block 202, the other group of the sliding plates 206 is rotatably connected to the inner wall of the second arc block 205, the middle parts of the sliding plates 206 are hollow, the inner part of the upper clamping groove 207 is matched with the bottom part of the inner ring 204, the inner part of the lower clamping groove 208 is matched with the bottom part of the outer ring 201, the limiting rods 210 are symmetrically distributed around the sliding plate 206 in the front, back, left and right directions, before the pipe fitting is fixed, the relative angle between the outer ring 201 and the inner ring 204 is adjusted according to the shape of the pipe fitting, the first arc block 202 and the second arc block 205 are slid up and down to change the clamping width of the first arc block 202 and the second arc block 205, after the fixing with the fitting is finished, the sliding plates 206 are released to be pressed down, the angle between the outer ring 201 and the inner ring 204 is locked, the effect of fixing the fitting with multiple degrees of freedom on any plane is achieved, and the use range of the fixing device is enlarged.

Example two:

referring to fig. 1, 2, 4, 5 and 6, a multi-degree-of-freedom plastic accessory fixing device comprises a fixing mechanism 3, wherein the fixing mechanism 3 comprises a ring groove seat 31, a rotary table 32 is rotatably connected to the middle of the ring groove seat 31, a hinge rod 33 is hinged to one end of the ring groove seat 31 far away from the rotary table 32, a first connecting rod 34 is hinged to one end of the hinge rod 33 close to the rotary table 32, a movable block 35 is hinged to the other end of the first connecting rod 34, a screw rod 36 is connected to the inner thread of the movable block 35, a positioning block 37 is hinged to one end of the hinge rod 33 far away from the rotary table 32, an auxiliary block 38 is connected to the inner limit of the positioning block 37, a rotary seat 203 is fixedly connected to one end of the ring groove seat 31, a groove is formed in the periphery of the ring groove seat 31, a screw rod 36 is rotatably connected to the periphery of the movable block 35, the positioning block 37 is connected to the first connecting rod 34 in a limiting manner through the auxiliary block 38, and the positioning block 37 and the auxiliary block 38 are made of flexible material, the rotary table 32 is rotated to drive the screw rod 36 to rotate, the movable block 35 is adjusted to move to match with the first connecting rod 34 for transmission, the relative angle of the hinge rod 33 is changed, the relative distance of the positioning block 37 is controlled, the auxiliary block 38 is matched and unfolded to be tightly attached to the inner wall of the pipe fitting in the extension process of the positioning block 37, the compression of the positioning block 37 on the inner wall of the pipe fitting is reduced, the effect of tensioning the inner wall of the clamping fitting from inside to outside is achieved, and the periphery of the pipe fitting is prevented from being damaged.

Example three:

referring to fig. 1-7, a multi-degree-of-freedom plastic accessory fixing device comprises a base 1, wherein the top of the base 1 is rotatably connected with an adjusting mechanism 2, the adjusting mechanism 2 comprises an outer ring 201, the periphery of the outer ring 201 is movably connected with a first arc block 202, the inner wall of the first arc block 202 is rotatably connected with a rotary seat 203, the middle of the outer ring 201 is rotatably connected with an inner ring 204, the periphery of the inner ring 204 is movably connected with a second arc block 205, a sliding disc 206 is arranged below the inner ring 204, the left side of the top of the sliding disc 206 is provided with an upper clamping groove 207, the bottom of the sliding disc 206 is provided with a lower clamping groove 208, the bottom end of the sliding disc 206 is elastically connected with a first spring 209, the end of the sliding disc 206 is limited and connected with a limiting rod 210, the interiors of the outer ring 201 and the inner ring 204 are hollow, the vertical central line of the outer ring 201 is rotatably connected with an inner ring 204, the number of the first arc blocks 202 is two, and the rotary seats 203 are divided into two groups, one group is rotatably connected to the inner wall of the first arc block 202, the other group is rotatably connected to the inner wall of the second arc block 205, the middle part of the sliding disc 206 is hollow, the inside of the upper clamping groove 207 is matched with the bottom of the inner ring 204, the inside of the lower clamping groove 208 is matched with the bottom of the outer ring 201, the limiting rods 210 are symmetrically distributed around the front, the back, the left and the right of the sliding disc 206, the inside of the adjusting mechanism 2 is fixedly connected with a fixing mechanism 3, the fixing mechanism 3 comprises a ring groove seat 31, the middle part of the ring groove seat 31 is rotatably connected with a turntable 32, one end of the ring groove seat 31 far away from the turntable 32 is hinged with a hinge rod 33, one end of the hinge rod 33 close to the turntable 32 is hinged with a first connecting rod 34, the other end of the first connecting rod 34 is hinged with a movable block 35, the internal thread of the movable block 35 is connected with a screw rod 36, one end of the hinge rod 33 far away from the turntable 32 is hinged with a positioning block 37, the inside of the positioning block 37 is connected with an auxiliary block 38, one end of the ring groove seat 31 far away from the turntable 32 is fixedly connected with a swivel base 203, the periphery of the ring groove seat 31 is provided with a groove, the center of the ring groove seat 31 is rotatably connected with a screw 36, the periphery of a movable block 35 is hinged with a first connecting rod 34, the positioning blocks 37 are connected in a limiting way through an auxiliary block 38, the positioning blocks 37 and the auxiliary block 38 are made of flexible materials, a plastic pipe fitting 4 is arranged above the base 1, the top of the base 1 is rotatably connected with an outer ring 201, the bottom of the base 1 is fixedly connected with a limiting rod 210, a fixing mechanism 3 is fixedly connected with one end of the rotary seat 203 close to the axis of the outer ring 201, the plastic pipe fitting 4 is positioned on one side of the inner walls of the outer ring 201 and the inner ring 204 to provide conditions for the fixing mechanism 3 to clamp the plastic pipe fitting 4, before the plastic pipe fitting 4 is fixed, the relative angle between the outer ring 201 and the inner ring 204 is adjusted according to the shape of the pipe fitting, the first arc block 202 and the second arc block 205 are slid up and down to change the clamping width of the first arc block 202 and the second arc block 205, after the fixing of the belt fitting is finished, the angles of the outer circular ring 201 and the inner circular ring 204 are locked, so that the effect of fixing accessories with any planes and multiple degrees of freedom is achieved, the application range of fixing equipment is increased, in the process of clamping the plastic pipe fittings 4, the screw rod 36 is driven to rotate by rotating the turntable 32, the movable block 35 is adjusted to move and match with the first connecting rod 34 for transmission, the relative angle of the hinge rod 33 is changed, the relative distance of the positioning block 37 is controlled, the auxiliary block 38 is matched and unfolded to tightly attach to the inner wall of the pipe fitting in the stretching process of the positioning block 37, the compression of the positioning block 37 on the inner wall of the pipe fitting is reduced, the effect of assisting in tensioning the inner wall of the clamping accessories from inside to outside is achieved, and the periphery of the pipe fitting is prevented from being damaged.

The working process and principle are as follows: before the plastic pipe fitting 4 is fixedly clamped, the bottom of the base 1 is fixedly connected with a limiting rod 210, the periphery of the limiting rod 210 is in limiting connection with a sliding disc 206, the bottom end of the sliding disc 206 is elastically connected with a spring I209, the bottom end of the outer circular ring 201 and the bottom end of the inner circular ring 204 are respectively clamped inside the upper clamping groove 207 and the lower clamping groove 208, the sliding disc 206 is pressed downwards to enable the spring I209 to compress and store force, the upper clamping groove 207 and the lower clamping groove 208 are separated from the outer circular ring 201 and the inner circular ring 204, the inner circular ring 204 is rotatably connected based on the vertical axis of the outer circular ring 201, the rotation of the outer circular ring 201 and the inner circular ring 204 is not limited any more, the inner circular ring 204 is adjusted and rotated according to the shape of the plastic pipe fitting 4, because the plastic pipe fitting 4 has 45-degree bends, direct reducing, reducing tee joints, bends and the like, and the angle joints of the pipe fitting are different, and the sections and the angles to be fixed are different, when the freedom in all directions needs to be limited, in order to enable the processing plane to face a user, the relative angle of the outer circular ring 201 or the inner circular ring 204 is adjusted, the first arc block 202 and the second arc block 205 are vertically slid to use the length of the bent pipe, the plane faces the user after the bent pipe is clamped, if the rotation of the bent pipe is not limited, only one port of the bent pipe is fixed by the fixing mechanism 3, when the three-way pipe is fixed, because the lengths of the three-way pipe are different, the relative angle of the outer circular ring 201 and the inner circular ring 204 is adjusted according to actual processing requirements, and the first arc block 202 and the second arc block 205 are vertically slid to match the clamping width, so that the effect of fixing accessories with multiple degrees of freedom in any plane is achieved, and the application range of the fixing equipment is enlarged.

After the selection of the clamping plane and the width is finished, the plastic pipe 4 is sleeved on the periphery of the positioning block 37, because one end of the rotary seat 203 far away from the center of the outer circular ring 201 is fixed with the circular groove seat 31, the inside of the circular groove seat 31 is rotatably connected with the screw 36, the periphery of the screw 36 is in threaded connection with the movable block 35, because the rotary disk 32 and the screw 36 are in the same axis, the rotary disk 32 is rotated to rotate the screw 36, the movable block 35 moves to one side close to the rotary disk 32 based on the threaded engagement of the screw 36, the periphery of the movable block 35 is hinged with the first connecting rod 34, the other end of the first connecting rod 34 is hinged with the hinge rod 33, meanwhile, the bottom of the circular groove seat 31 is hinged with the hinge rod 33, the bottom of the hinge rod 33 is hinged with the positioning block 37, as the movable block 35 moves to one side of the rotary disk 32, under the transmission of the first connecting rod 34, the relative angle between the hinge rods 33 is increased to enable the positioning block 37 to gradually expand outwards, because the positioning blocks 37 are in limited connection through the auxiliary block 38, the positioning block 37 and the auxiliary block 38 are both made of flexible materials, the auxiliary block 38 is synchronously enlarged along with the increase of the expansion radius of the positioning block 37, the auxiliary block is attached to the inner wall of the plastic pipe fitting 4 in an auxiliary mode, the force for pressing the inner wall of the plastic pipe fitting when the positioning block 37 expands outwards is shared, the effect of tensioning the inner wall of the clamping fitting in an auxiliary mode from inside to outside is achieved, and the periphery of the pipe fitting is prevented from being damaged.

In summary, the multi-degree-of-freedom plastic accessory fixing device is rotationally connected with the outer ring 201 through the top of the base 1, when the plastic accessory is fixed, pressing down on the sliding disk 206 causes the outer ring 201 to disengage from the lower snap groove 208, the inner ring 204 to disengage from the upper snap groove 207, according to the actual shape of the fitting, the relative angle between the outer ring 201 and the inner ring 204 is adjusted to select a clamping plane, the first arc block 202 and the second arc block 205 are slid up and down to enable the distance between the centers of the first arc block 202 and the second arc block 205 to be matched with the width of the fitting, after the pipe fitting is clamped, the sliding disc 206 is released from being pressed down, the sliding disc 206 is limited by the elastic force of the first spring 209 and the limiting rod 210, the sliding disc 206 moves up to enable the bottom end of the inner ring 204 and the bottom end of the outer ring 201 to be respectively clamped into the upper clamping groove 207 and the lower clamping groove 208 to lock the clamping plane of the pipe fitting, therefore, the effect of fixing the accessory in any plane and multiple degrees of freedom is achieved, and the application range of the fixing equipment is enlarged.

In addition, the multi-degree-of-freedom plastic accessory fixing device is characterized in that the rotary table 32 is rotatably connected to the middle of the annular groove seat 31, the plastic pipe fitting 4 is sleeved on the periphery of the positioning block 37 and gradually rotates the rotary table 32, the movable block 35 moves towards one side of the rotary table 32 along with the rotation of the screw rod 36, the relative angle between the hinge rods 33 is increased under the transmission of the first connecting rod 34, the positioning block 37 hinged to the bottom of the hinge rod 33 is gradually unfolded outwards to position the axis of the pipe fitting, and meanwhile, the auxiliary blocks 38 in limit connection with the left side and the right side of the positioning block 37 are gradually unfolded to be attached to the inner wall of the pipe fitting, so that the effect of assisting in tensioning and clamping the inner wall of the accessory from inside to outside is achieved, and the periphery of the pipe fitting is prevented from being damaged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.