CN113893492B

CN113893492B - Exerciser and manufacturing method thereof

Info

Publication number: CN113893492B
Application number: CN202111355386.4A
Authority: CN
Inventors: 苏雷
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-05-17
Anticipated expiration: 2041-11-16
Also published as: CN113893492A

Abstract

The invention relates to an exerciser and a manufacturing method thereof, the exerciser comprises a square ring block, a holding column and a plastic layer, the middle part of the square ring block is fixedly connected with the holding column, the square ring block is of an outer square and inner circle structure, the four corners of the square ring block are all provided with round corners, the joints of the holding column and the square ring block are all provided with the round corners, the outer end surfaces of the square ring block and the holding column are all coated with a layer of plastic layer, in the manufacturing process of the exerciser, special exerciser manufacturing equipment is required to be used, the manufacturing equipment comprises a polishing device and a paint dipping device, the polishing device comprises a processing table, a telescopic bracket, a supporting plate, a positioning frame plate, a U-shaped plate, a threaded rod, a motor I, a movable plate, a guide column, a polishing group and a guide through hole, the invention positions and polishes a plurality of dumbbell metal pieces through the polishing device, and the whole processing process does not need manual operation, the production efficiency of the dumbbell is improved.

Description

Exerciser and manufacturing method thereof

Technical Field

The invention relates to the technical field of manufacturing of exercise equipment, in particular to an exerciser and a manufacturing method of the exerciser.

Background

The society develops rapidly, and the region that can supply human free activity to take exercise gradually diminishes, and in order to improve human physical function, more and more exercise equipment has been produced, makes human can do exercises to the family just can not enough.

The type of exerciser is very various, and here mainly to the dumbbell, traditional dumbbell only can the grasp mode of hand in the use, consequently adopts the annular dumbbell gripping in the use of being convenient for, but annular dumbbell is difficult to erect owing to its shape and places, only can lie flat and place, relatively takes up and places the space, and the production process of dumbbell is mainly: at first with dumbbell metalwork casting shaping, handle the metalwork surface, finally carry out the cladding to the metalwork surface and handle, when polishing dumbbell metalwork surface, mainly polish to the position that touches in the human use, the in-process of polishing needs the manual work to fix the metalwork, needs manual operation to polish simultaneously, has reduced the efficiency of dumbbell production.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides an exerciser and a method for manufacturing the exerciser.

The utility model provides an exerciser, includes square ring piece, holds post and plastic layer, square ring piece middle part fixedly connected with holds the post, and the square ring is the circle structure in the foreign side, and the fillet has all been seted up in square ring piece four corners, holds the post and all has seted up the fillet with square ring piece junction, square ring piece and the outer terminal surface of holding the post all cladding one deck plastic layer.

In the manufacturing process of the exerciser, special exerciser manufacturing equipment is required, and the manufacturing equipment comprises a grinding device and a paint dipping device.

The polishing device comprises a processing table, two telescopic supports, a support plate, a positioning frame plate, a U-shaped plate, a threaded rod, a first motor, a movable plate, guide posts, a polishing group and guide through holes, wherein the upper end surface of the processing table is fixedly provided with the two telescopic supports in bilateral symmetry, the upper end surfaces of the two telescopic supports are fixedly provided with the support plate together, the lower end surface of the support plate is uniformly and fixedly provided with the positioning frame plate, the middle part of the upper end surface of the support plate is fixedly provided with the U-shaped plate, the middle part of the U-shaped plate is connected with the threaded rod in a rotating connection mode, the lower end of the threaded rod is connected with the support plate through a bearing, the upper end surface of the U-shaped plate is fixedly provided with the first motor through a motor base, the output shaft of the first motor is fixedly connected with the threaded rod through a coupler, the movable plate is connected with the threaded rod in a threaded connection mode, the movable plate is positioned above the support plate, and the guide posts are symmetrically and fixedly arranged at the front side and the rear side of the lower end surface, the guide post runs through the backup pad, and movable plate lower extreme face just is located the location deckle board directly over fixed mounting have the group of polishing, just is located the inboard guide through-hole that has evenly seted up of location deckle board in the backup pad, and guide through-hole position and the position one-to-one of group of polishing.

The polishing group is composed of two arc-shaped columns which are bilaterally symmetrical, the outer end surfaces of the arc-shaped columns are smooth, electromagnetic columns are fixedly arranged in the middle of the arc-shaped columns, limiting grooves are uniformly formed in the outer sides of the arc-shaped columns along the circumferential direction of the arc-shaped columns, cylindrical springs are fixedly arranged in the limiting grooves, positioning plates are fixedly arranged at the tail ends of the cylindrical springs and are connected with the limiting grooves in a sliding fit mode, moving columns are fixedly arranged in the middle of the positioning plates, magnetic stone blocks are fixedly arranged at one ends, facing the electromagnetic columns, of the moving columns, the magnetism of the electrified electromagnetic columns is the same as that of the magnetic stone blocks, arc-shaped cylinders are fixedly arranged at the ends, facing away from the arc-shaped columns, of the moving columns, positioned on the front and back sides of the moving plates, and are rotatably connected with a sand grinding column through a pin shaft, the arc-shaped shell is fixedly mounted at one end, far away from the arc-shaped column, of the rest of the movable columns, and a frosted ball is connected in the arc-shaped shell in a sliding fit mode.

The first preferred technical scheme is as follows: the dip coating device comprises a paint containing box, a heating wire, a heat insulation board, a mechanical arm, an electric telescopic rod, a connecting rod, an electromagnetic square plate and a sponge block, the paint containing box is fixedly mounted at the rear of the upper end face of a processing table, the heating wire is fixedly mounted on the inner end face of the paint containing box, the heat insulation board is fixedly mounted on the outer end face of the paint containing box, the mechanical arm is fixedly mounted on the left side and the right side of the upper end face of the paint containing box, the mechanical arm is mounted on the upper end face of the processing table, the electric telescopic rod is fixedly mounted at the tail end of the mechanical arm, the connecting rod is fixedly mounted on the lower end face of the electric telescopic rod, the electromagnetic square plate is fixedly mounted on the lower end face of the connecting rod, a buckle plate is clamped on the lower end face of the electromagnetic square plate, and the sponge block is fixedly mounted on the lower end face of the buckle plate.

The preferred technical scheme is as follows: the processing table is characterized in that the upper end face of the processing table and the front side of the polishing group are provided with guide chutes, the inner end faces of the guide chutes are smooth, the left side and the right side of the inner end faces of the guide chutes are symmetrically and fixedly provided with a plurality of limiting springs, and the tail ends of the limiting springs are fixedly provided with rectangular transverse plates.

The preferred technical scheme is three: the backup pad includes rectangular plate, arc scrubbing brush, locating lever and torsional spring, and the common fixed mounting of two telescopic bracket up end has the rectangular plate, and the rectangular plate up end just is located direction through-hole upside fixed mounting and has the arc scrubbing brush, the brush hair slope on the arc scrubbing brush, and the terminal surface is connected with the locating lever through the even rotation of round pin axle along its circumference in the arc scrubbing brush, and the epaxial cover of round pin on the locating lever has the torsional spring, torsional spring one end and arc scrubbing brush fixed connection, the torsional spring other end and locating lever fixed connection.

The preferable technical scheme is four: the locating frame plate comprises an annular plate, an extrusion spring, an extrusion block, a rubber plate and a sponge plate, the annular plate is uniformly and fixedly mounted on the lower end face of the supporting plate, the extrusion spring is uniformly and fixedly mounted on the inner end face of the annular plate along the circumferential direction of the annular plate, the extrusion block is fixedly mounted at the tail end of the extrusion spring, the rubber plate is fixedly mounted at the tail end of the extrusion block, and the sponge plate is fixedly mounted on the inner end face of the annular plate and located between the extrusion springs.

The preferred technical scheme is five: the guide post lower end face is fixedly provided with a buffer block, the outer end face of the guide post is uniformly and fixedly provided with a limiting strip along the circumferential direction of the guide post, and one end of the limiting strip, far away from the guide post, is uniformly connected with a rolling post through a pin shaft in a rotating manner.

The preferred technical scheme is six: the inner end surface of the guide through hole is uniformly provided with lubricating balls in a rolling manner along the circumferential direction of the guide through hole, and the inner end surface of the guide through hole is smooth; the polishing group smoothly passes through the guide through hole through the lubricating ball.

The preferred technical scheme is seven: the exerciser manufacturing device also uses an exerciser manufacturing method, and comprises the following steps: s1, transporting metal pieces: firstly, the dumbbell metal piece after casting forming is conveyed to a workbench through a belt conveyor.

S2, positioning metal piece: the support plate is controlled to move downwards through the telescopic support, the dumbbell metal piece is extruded and positioned, and the moving plate is driven by the motor I to reciprocate on the threaded rod in the vertical direction.

S3, grinding the metal piece: at the in-process of arc post and dumbbell metalwork contact, circular telegram to the electromagnetism post, make the moving column move towards the one side of keeping away from the arc post, dull polish ball and dumbbell metalwork in close contact with polish the dumbbell metalwork.

S4, paint dipping treatment: the dumbbell metalwork after polishing is carried out the dip coating through the dip coating device and is handled, finally dries it, makes the paint vehicle on dumbbell metalwork surface dry, collects the packing and handles the dumbbell.

The invention has the following beneficial effects: 1. the exerciser provided by the invention is convenient to place, reduces the area required for placing and is convenient to grasp by utilizing the shape of square outside and round inside, and the round angle can prevent the exerciser from damaging the human body when the exerciser touches the human body.

2. According to the equipment for manufacturing the exerciser, the plurality of dumbbell metal pieces are positioned and polished through the polishing device, manual operation is not needed in the whole machining process, and the production efficiency of dumbbells is improved.

Drawings

Fig. 1 is a perspective view of an exerciser according to the present invention.

Fig. 2 is a perspective view illustrating an apparatus for manufacturing an exerciser according to the present invention.

Fig. 3 is a partial enlarged view of the present invention at N of fig. 2.

Fig. 4 is a partial enlarged view of the present invention at M of fig. 2.

Fig. 5 is a schematic left-side plan view of the apparatus for manufacturing an exerciser according to the present invention.

Fig. 6 is a partial enlarged view of the present invention at E of fig. 5.

Fig. 7 is a partial enlarged view of the present invention at F of fig. 5.

Fig. 8 is a partial enlarged view of the present invention at G of fig. 5.

Fig. 9 is a partial enlarged view of the present invention at H of fig. 5.

Fig. 10 is a top plan view of the guiding column of the present invention.

Fig. 11 is a schematic flow chart of the present invention.

In the figure: 1. a square ring block; 2. holding the column; 3. a plastic layer; 4. a polishing device; 40. a processing table; 401. a guide chute; 402. a limiting spring; 403. a rectangular transverse plate; 41. a telescoping support; 42. a support plate; 421. a rectangular plate; 422. an arc scrubbing brush; 423. positioning a rod; 424. a torsion spring; 43. positioning the frame plate; 431. an annular plate; 432. extruding the spring; 433. extruding the block; 434. a rubber plate; 435. a sponge plate; 44. a U-shaped plate; 45. a threaded rod; 46. a first motor; 47. moving the plate; 48. a guide post; 481. a buffer block; 482. a limiting strip; 483. a rolling post; 49. polishing the group; 491. an arc-shaped column; 492. an electromagnetic column; 493. a limiting groove; 494. a cylindrical spring; 495. positioning a plate; 496. moving the column; 497. a magnet block; 498. an arc-shaped cylinder; 499. grinding a sand column; 500. an arc-shaped shell; 501. a frosted ball; 50. a guide through hole; 502. a lubricating ball; 5. a paint dipping device; 51. a paint containing box; 52. an electric heating wire; 53. a thermal insulation board; 54. a robot arm; 55. an electric telescopic rod; 56. a connecting rod; 57. an electromagnetic square plate; 58. a sponge block.

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.

Referring to fig. 1, an exerciser, include square ring piece 1, hold post 2 and plastic layer 3, post 2 is held to 1 middle part fixedly connected with of square ring piece, and square ring piece 1 is the circle structure in the foreign side, and the fillet has all been seted up in 1 four corners of square ring piece, holds post 2 and square ring piece 1 junction and has all seted up the fillet, square ring piece 1 with hold the outer terminal surface of post 2 and all wrap up one deck plastic layer 3.

In the above-described exerciser manufacturing process, it is necessary to use a dedicated exerciser manufacturing apparatus including a polishing device 4 and a paint dipping device 5.

Referring to fig. 2, the polishing device 4 includes a processing table 40, telescopic supports 41, a support plate 42, a positioning frame plate 43, a U-shaped plate 44, a threaded rod 45, a first motor 46, a moving plate 47, a guide post 48, a polishing group 49 and a guide through hole 50, the upper end surface of the processing table 40 is bilaterally symmetrically and fixedly provided with two telescopic supports 41, the upper end surfaces of the two telescopic supports 41 are jointly and fixedly provided with the support plate 42, the lower end surface of the support plate 42 is uniformly and fixedly provided with the positioning frame plate 43, the middle part of the upper end surface of the support plate 42 is fixedly provided with the U-shaped plate 44, the middle part of the U-shaped plate 44 is connected with the threaded rod 45 in a rotating connection manner, the lower end of the threaded rod 45 is connected with the support plate 42 through a bearing, the upper end surface of the U-shaped plate 44 is fixedly provided with the first motor 46 through a motor base, the output shaft of the first motor 46 is fixedly connected with the threaded rod 45 through a coupler, the moving plate 47 is connected with the threaded rod 45 in a threaded connection manner, the movable plate 47 is positioned above the support plate 42, the guide columns 48 are symmetrically and fixedly arranged on the front side and the rear side of the lower end face of the movable plate 47, the guide columns 48 penetrate through the support plate 42, the polishing groups 49 are fixedly arranged on the lower end face of the movable plate 47 and right above the positioning frame plate 43, guide through holes 50 are uniformly formed in the support plate 42 and positioned on the inner side of the positioning frame plate 43, and the positions of the guide through holes 50 correspond to the positions of the polishing groups 49 one by one; firstly, the dumbbell metal piece formed by casting is transported to a processing table 40 through a belt conveyor, a supporting plate 42 moves downwards through a telescopic support 41 until a positioning frame plate 43 is in close contact with the dumbbell metal piece, the dumbbell metal piece is positioned through the positioning frame plate 43, at the moment, a threaded rod 45 is driven to rotate through a motor I46, a moving plate 47 moves downwards until a polishing group 49 penetrates through a guide through hole 50 to be in contact with the dumbbell metal piece, the dumbbell metal piece is polished, and the moving plate 47 is positioned through a guide column 48.

Referring to fig. 2, 4, 8 and 9, the polishing group 49 is composed of two arc-shaped posts 491 which are bilaterally symmetrical, the outer end surfaces of the arc-shaped posts 491 are smooth, an electromagnetic post 492 is fixedly installed in the middle of the arc-shaped posts 491, a limiting groove 493 is uniformly formed in the outer side of the arc-shaped posts 491 along the circumferential direction, a cylindrical spring 494 is fixedly installed in the limiting groove 493, a positioning plate 495 is fixedly installed at the tail end of the cylindrical spring 494, the positioning plate 495 and the limiting groove 493 are connected in a sliding fit manner, a moving post 496 is fixedly installed in the middle of the positioning plate 495, a magnet block 497 is fixedly installed on the moving post 496 facing one end of the electromagnetic post 492, the magnetism of the energized electromagnetic post 492 is the same as that of the magnet block 497, an arc-shaped barrel 498 is fixedly installed on the moving post 496 facing one end far away from the arc-shaped posts 491 on the front and rear side of the moving plate 47, and a sand grinding post 499 is rotatably connected in the arc-shaped barrel through a pin shaft, the other moving columns 496 are fixedly provided with an arc-shaped shell 500 towards one end far away from the arc-shaped column 491, and a sanding ball 501 is connected in the arc-shaped shell 500 in a sliding fit manner; when arc post 491 and dumbbell metalwork contact, carry out circular telegram to electromagnetism post 492, make the magnet piece 497 on the removal post 496 remove to arc post 491 surface position under the effect of magnetic force, make dull polish ball 501 and dull polish post 499 all with dumbbell metalwork in close contact with to reach the purpose of polishing to the dumbbell metalwork.

Referring to fig. 2, the paint dipping device 5 includes a paint containing box 51, an electric heating wire 52, a heat insulation board 53, a mechanical arm 54, an electric telescopic rod 55, a connecting rod 56, an electromagnetic square plate 57 and a sponge block 58, the paint containing box 51 is fixedly installed at the rear of the upper end surface of the processing table 40, the electric heating wire 52 is installed inside the side wall of the paint containing box 51, the heat insulation board 53 is fixedly installed on the outer end surface of the paint containing box 51, the mechanical arm 54 is fixedly installed on the left side and the right side of the upper end surface of the paint containing box 51, the mechanical arm 54 is installed on the upper end surface of the processing table 40, the electric telescopic rod 55 is fixedly installed at the tail end of the mechanical arm 54, the connecting rod 56 is fixedly installed on the lower end surface of the electric telescopic rod 55, the electromagnetic square plate 57 is fixedly installed on the lower end surface of the connecting rod 56, a clamping plate is clamped on the lower end surface of the electromagnetic square plate 57, and the sponge block 58 is fixedly installed on the lower end surface of the clamping plate; after the dumbbell metal piece is polished, the polishing group 49 resets, cooperate with electric telescopic handle 55 through robotic arm 54, make sponge piece 58 and the dumbbell metal piece in close contact with of electromagnetism square plate 57 lower extreme, carry out circular telegram to electromagnetism square plate 57 this moment, make the dumbbell metal piece under the effect of magnetic force, remove along with robotic arm 54's removal, transport the dumbbell metal piece to flourishing lacquer box 51 in through robotic arm 54, make the dumbbell metal piece contact with the paint vehicle in the flourishing lacquer box 51, finally carry out drying process to the dumbbell metal piece after the dip coating is handled, because sponge piece 58 can absorb the paint vehicle, consequently make dumbbell metal piece up end and paint vehicle contact through sponge piece 58, in order to prevent that dumbbell metal piece surface can't contact with the paint vehicle completely.

Referring to fig. 3, the upper end surface of the processing table 40 and the front side of the polishing group 49 are both provided with a guide chute 401, the inner end surface of the guide chute 401 is smooth, the left side and the right side of the inner end surface of the guide chute 401 are symmetrically and fixedly provided with a plurality of limiting springs 402, and the tail ends of the limiting springs 402 are fixedly provided with rectangular transverse plates 403; the rectangular transverse plate 403 is in close contact with the dumbbell metal piece through the elastic force of the limiting spring 402, and the dumbbell metal piece is limited and guided through the guide chute 401.

Referring to fig. 2 and 7, the supporting plate 42 includes a rectangular plate 421, an arc-shaped scrubbing brush 422, a positioning rod 423 and a torsion spring 424, the upper end surfaces of the two telescopic brackets 41 are jointly and fixedly provided with the rectangular plate 421, the upper end surface of the rectangular plate 421 and the upper side of the guide through hole 50 are fixedly provided with the arc-shaped scrubbing brush 422, bristles on the arc-shaped scrubbing brush 422 are inclined, the inner end surface of the arc-shaped scrubbing brush 422 is uniformly and rotatably connected with the positioning rod 423 along the circumferential direction thereof through a pin shaft, the pin shaft on the positioning rod 423 is sleeved with the torsion spring 424, one end of the torsion spring 424 is fixedly connected with the arc-shaped scrubbing brush 422, and the other end of the torsion spring 424 is fixedly connected with the positioning rod 423; when group 49 resets of polishing, 49 surfaces of group and the contact of arc scrubbing brush 422 polish, 49 surface adnexed pieces of group of polishing drop, the extrusion force on the vertical direction that the brush hair received can be reduced to the brush hair of slope, receives the extrusion force slope when locating lever 423 contacts with the dumbbell metalwork, locating lever 423 when breaking away from with the dumbbell metalwork, locating lever 423 resumes to original state under torsional spring 424's effort, resumes to original state locating lever 423 and carries out the location support to the brush hair.

Referring to fig. 6, the positioning frame plate 43 includes an annular plate 431, extrusion springs 432, extrusion blocks 433, a rubber plate 434 and a sponge plate 435, the annular plate 431 is uniformly and fixedly installed on the lower end surface of the supporting plate 42, the extrusion springs 432 are uniformly and fixedly installed on the inner end surface of the annular plate 431 along the circumferential direction thereof, the extrusion blocks 433 are fixedly installed at the tail ends of the extrusion springs 432, the rubber plate 434 is fixedly installed at the tail ends of the extrusion blocks 433, and the sponge plate 435 is fixedly installed on the inner end surface of the annular plate 431 and between the extrusion springs 432; the rubber block and the dumbbell metal piece in close contact with each other on the lower end face of the extrusion block 433 are enabled to be in close contact with each other through the elastic force of the extrusion spring 432, the extrusion spring 432 and the extrusion block 433 are limited through the sponge plate 435, the situation that the extrusion spring is inclined in the extrusion process is prevented, meanwhile, the sponge plate 435 and the dumbbell metal piece are in close contact with each other, and the dumbbell metal piece is further limited.

Referring to fig. 5 and 10, a buffer block 481 is fixedly mounted on the lower end surface of the guide post 48, a limit strip 482 is uniformly and fixedly mounted on the outer end surface of the guide post 48 along the circumferential direction thereof, and a rolling post 483 is uniformly and rotatably connected to one end of the limit strip 482 away from the guide post 48 through a pin; fix a position the rolling post 483 through spacing 482, reduce the frictional force between spacing 482 and the direction through-hole 50 through rolling post 483, produce when preventing guide post 48 lower extreme face and workstation contact through bump 481 and collide with.

Referring to fig. 4, the inner end surface of the guide through hole 50 is uniformly provided with a lubricating ball 502 in a rolling manner along the circumferential direction thereof, and the inner end surface of the guide through hole 50 is smooth; the sanding group 49 is moved smoothly through the guide through-hole 50 by means of the lubricating ball 502.

Referring to fig. 11, the above-mentioned exerciser manufacturing apparatus further employs a method of manufacturing an exerciser, comprising the steps of: s1, transporting metal pieces: firstly, the dumbbell metal piece after casting and forming is conveyed to a workbench through a belt conveyor.

S2, positioning metal piece: the support plate 42 is controlled to move downwards through the telescopic bracket 41, the dumbbell metal piece is extruded and positioned, and the first motor 46 drives the moving plate 47 to reciprocate on the threaded rod 45 in the vertical direction.

S3, grinding the metal piece: in the process that the arc-shaped column 491 is in contact with the dumbbell metal piece, the electromagnetic column 492 is electrified to enable the moving column 496 to move towards one side far away from the arc-shaped column 491, and the sanding ball 501 is in close contact with the dumbbell metal piece to polish the dumbbell metal piece.

S4, paint dipping treatment: the dumbbell metalwork after polishing is carried out the dip coating through dipping coating device 5 and is handled, finally dries it, makes the paint vehicle on dumbbell metalwork surface dry, collects the packing and handles the dumbbell.

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.

Claims

1. The utility model provides an exerciser, includes square ring piece (1), holds post (2) and plastic layer (3), its characterized in that: the middle part of the square ring block (1) is fixedly connected with a holding column (2), the square ring block (1) is of an outer square and inner circle structure, four corners of the square ring block (1) are provided with round corners, the joint of the holding column (2) and the square ring block (1) is provided with the round corners, and the outer end surfaces of the square ring block (1) and the holding column (2) are coated with a plastic layer (3); wherein:

in the manufacturing process of the exerciser, special exerciser manufacturing equipment is required, and the manufacturing equipment comprises a grinding device (4) and a paint dipping device (5);

the polishing device (4) comprises a processing table (40), telescopic supports (41), a support plate (42), a positioning frame plate (43), a U-shaped plate (44), a threaded rod (45), a motor I (46), a movable plate (47), guide columns (48), a polishing group (49) and a guide through hole (50), wherein the upper end face of the processing table (40) is bilaterally symmetrically and fixedly provided with two telescopic supports (41), the upper end faces of the two telescopic supports (41) are jointly and fixedly provided with the support plate (42), the lower end face of the support plate (42) is uniformly and fixedly provided with the positioning frame plate (43), the middle position of the upper end face of the support plate (42) is fixedly provided with the U-shaped plate (44), the middle part of the U-shaped plate (44) is connected with the threaded rod (45) in a rotating connection mode, the lower end of the threaded rod (45) is connected with the support plate (42) through a bearing, the upper end face of the U-shaped plate (44) is fixedly provided with the motor I (46) through a motor base, an output shaft of a first motor (46) is fixedly connected with a threaded rod (45) through a coupler, a movable plate (47) is connected to the threaded rod (45) in a threaded connection mode, the movable plate (47) is located above a supporting plate (42), guide columns (48) are symmetrically and fixedly mounted on the front side and the rear side of the lower end face of the movable plate (47), the guide columns (48) penetrate through the supporting plate (42), a polishing group (49) is fixedly mounted on the lower end face of the movable plate (47) and located right above a positioning frame plate (43), guide through holes (50) are formed in the supporting plate (42) and located on the inner side of the positioning frame plate (43), and the positions of the guide through holes (50) correspond to the positions of the polishing group (49) one by one;

the polishing group (49) is composed of two arc columns (491) which are bilaterally symmetrical, the outer end surfaces of the arc columns (491) are smooth, electromagnetic columns (492) are fixedly installed in the middles of the arc columns (491), limiting grooves (493) are evenly formed in the outer sides of the arc columns (491) along the circumferential direction of the arc columns, cylindrical springs (494) are fixedly installed in the limiting grooves (493), positioning plates (495) are fixedly installed at the tail ends of the cylindrical springs (494), the positioning plates (495) are connected with the limiting grooves (493) in a sliding fit mode, moving columns (496) are fixedly installed in the middles of the positioning plates (495), magnetic blocks (497) are fixedly installed on the moving columns (496) towards one ends of the electromagnetic columns (492), the magnetism of the electromagnetic columns (492) after electrification is the same as that of the magnetic blocks (497), arc cylinders (498) are fixedly installed on the moving columns (496) on the opposite end surfaces of the arc columns (491) on the front and back sides of the arc columns (47) towards one end far away from the arc columns (491), the inside of the arc-shaped cylinder (498) is rotatably connected with a sanding column (499) through a pin shaft, the other moving columns (496) are fixedly provided with an arc-shaped shell (500) towards one end far away from the arc-shaped column (491), and the inside of the arc-shaped shell (500) is connected with a sanding ball (501) in a sliding fit manner;

the supporting plate (42) comprises a rectangular plate (421), arc-shaped scrubbing brushes (422), positioning rods (423) and torsion springs (424), the rectangular plate (421) is fixedly mounted on the upper end faces of the two telescopic supports (41) together, the arc-shaped scrubbing brushes (422) are fixedly mounted on the upper end faces of the rectangular plate (421) and located on the upper sides of the guide through holes (50), bristles on the arc-shaped scrubbing brushes (422) are inclined, the inner end faces of the arc-shaped scrubbing brushes (422) are uniformly and rotatably connected with the positioning rods (423) along the circumferential direction of the inner end faces through pin shafts, the torsion springs (424) are sleeved on the pin shafts on the positioning rods (423), one ends of the torsion springs (424) are fixedly connected with the arc-shaped scrubbing brushes (422), and the other ends of the torsion springs (424) are fixedly connected with the positioning rods (423);

the positioning frame plate (43) comprises an annular plate (431), an extrusion spring (432), an extrusion block (433), a rubber plate (434) and a sponge plate (435), the annular plate (431) is uniformly and fixedly installed on the lower end face of the supporting plate (42), the extrusion spring (432) is uniformly and fixedly installed on the inner end face of the annular plate (431) along the circumferential direction of the annular plate, the extrusion block (433) is fixedly installed at the tail end of the extrusion spring (432), the rubber plate (434) is fixedly installed at the tail end of the extrusion block (433), and the sponge plate (435) is fixedly installed on the inner end face of the annular plate (431) and positioned between the extrusion springs (432);

the paint dipping device (5) comprises a paint containing box (51), an electric heating wire (52), a heat insulation plate (53), a mechanical arm (54), an electric telescopic rod (55), a connecting rod (56), an electromagnetic square plate (57) and a sponge block (58), the paint containing box (51) is fixedly installed at the rear position of the upper end face of the processing table (40), the electric heating wire (52) is fixedly installed at the inner end face of the paint containing box (51), the heat insulation plate (53) is fixedly installed at the outer end face of the paint containing box (51), the mechanical arm (54) is fixedly installed on the left side and the right side of the upper end face of the paint containing box (51), the mechanical arm (54) is installed on the upper end face of the processing table (40), the electric telescopic rod (55) is fixedly installed at the tail end of the mechanical arm (54), the connecting rod (56) is fixedly installed on the lower end face of the electric telescopic rod (55), the electromagnetic square plate (57) is fixedly installed on the lower end face of the connecting rod (56), the lower end face of the electromagnetic square plate (57) is clamped with a clamping plate, and a sponge block (58) is fixedly arranged on the lower end face of the clamping plate.

2. An exerciser according to claim 1, wherein: the processing table is characterized in that a guide chute (401) is formed in the upper end face of the processing table (40) and located on the front side of the polishing group (49), the inner end face of the guide chute (401) is smooth, a plurality of limiting springs (402) are symmetrically and fixedly mounted on the left side and the right side of the inner end face of the guide chute (401), and a rectangular transverse plate (403) is fixedly mounted at the tail end of each limiting spring (402).

3. An exerciser according to claim 1, wherein: the terminal surface fixed mounting has buffer block (481) under guide post (48), and the even fixed mounting of guide post (48) outer terminal surface along its circumference has spacing (482), and the one end that guide post (48) were kept away from in spacing (482) is evenly connected with column roll (483) through the round pin axle rotation.

4. An exerciser according to claim 1, wherein: and the inner end surface of the guide through hole (50) is uniformly provided with lubricating balls (502) in a rolling manner along the circumferential direction, and the inner end surface of the guide through hole (50) is smooth.

5. An exerciser according to claim 1, wherein: the exerciser manufacturing device also uses an exerciser manufacturing method, and comprises the following steps:

s1, transporting metal pieces: firstly, conveying the cast dumbbell metal piece to a workbench through a belt conveyor;

s2, positioning metal piece: the support plate (42) is controlled to move downwards through the telescopic bracket (41), the dumbbell metal piece is extruded and positioned, and the moving plate (47) is driven by the motor I (46) to reciprocate on the threaded rod (45) in the vertical direction;

s3, grinding the metal piece: in the process that the arc-shaped column (491) is contacted with the dumbbell metal piece, the electromagnetic column (492) is electrified, so that the movable column (496) moves towards one side far away from the arc-shaped column (491), the sanding ball (501) is tightly contacted with the dumbbell metal piece, and the dumbbell metal piece is sanded;

s4, paint dipping treatment: the dumbbell metal piece after polishing is subjected to paint dipping treatment through the paint dipping device (5), and finally is dried, so that paint on the surface of the dumbbell metal piece is dried, and the dumbbell is collected and packaged.