Welding device for centrifugal pump production

Abstract

The invention discloses a welding device for centrifugal pump production, and relates to the technical field of welding equipment.The welding device comprises a bottom plate and a welding mechanical arm, a rotating disc is arranged on the upper end face of the bottom plate, a first motor for driving the rotating disc is arranged on the upper end face of the bottom plate, a supporting column is arranged on the upper end face of the rotating disc, and a containing table is arranged on the upper end face of the supporting column; a locking mechanism used for pressing blades is arranged in the containing table, a cavity is formed in the containing table, blade grooves are circumferentially formed in the upper end face of the containing table, a clamping groove is formed in the middle of the cavity, and the blade disc and the blades can be rapidly fixed through cooperation between the locking mechanism and the positioning mechanism. Therefore, inclination of the impeller blade during welding is avoided, internal stress possibly generated due to shrinkage during solidification of the plastic material is avoided, deformation of the blade or cracking of the elastic diaphragm is avoided, symmetry of the impeller blade after welding is guaranteed, and operation stability of the impeller blade after welding is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and more particularly to a welding device for producing centrifugal pumps. Background Art

[0002] A centrifugal pump is a pump that relies on the centrifugal force generated by the rotation of the impeller to transport liquid. When the pump impeller rotates, the liquid in the impeller is thrown to the edge of the impeller under the action of centrifugal force, and forms a liquid flow with a certain pressure and speed at the edge of the impeller. The impeller of a centrifugal pump is one of the core components of a centrifugal pump. During the processing of the impeller, the blades and the impeller disc need to be welded together. When fixing, the water pump impeller is positioned through pre-set positioning grooves and multiple groups of positioning holes. However, in order to ensure the accuracy of positioning in the actual working process, the positioning holes are generally set to the size of the blades. In this way, it is sometimes difficult to place the blades into the positioning holes. Although it is easier to place with larger positioning holes, the blades will shake and tilt in the positioning holes. After welding, it is difficult to ensure the symmetry of several blades, which affects the stability of the impeller operation.

[0003] Publication No. CN118002969A discloses a welding device for centrifugal pump production, which solves the problem that the impeller blades are tilted in the blade positioning hole and it is difficult to ensure the symmetry of the blades after welding. Although the prior art heats the plastic material to wrap the blades with the plastic material to avoid the impeller blades from tilting during welding, in actual use, the plastic material may generate internal stress due to shrinkage when solidifying, resulting in blade deformation or cracking of the elastic diaphragm and deviation from the shaping position. For this reason, we propose a welding device for centrifugal pump production. Summary of the invention

[0004] In view of the shortcomings of the prior art, an object of the present invention is to provide a welding device for producing centrifugal pumps.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: it includes a base plate and a welding robot arm, the upper end surface of the base plate is provided with a turntable, the upper end surface of the base plate is provided with a motor for driving the turntable, the upper end surface of the turntable is provided with a support column, the upper end surface of the support column is provided with a placement table, a locking mechanism for pressing the blades is provided in the placement table, a chamber is formed in the placement table, the upper end surface of the placement table is provided with a blade groove in a circumferential manner, the chamber is connected to the blade groove, a card slot is provided in the middle position of the chamber, and also includes a positioning mechanism provided in the locking mechanism, the locking mechanism includes a driving member arranged on the outside of the placement table, a linkage member is provided in the chamber, a locking member is circumferentially provided in the chamber, a fixing member is provided in the locking member, and a resistance member is also provided on the locking member, and the linkage member and the resistance member cooperate to enable the locking member to fix the blade.

[0006] Preferably, the positioning mechanism comprises an auxiliary member arranged at the bottom end of the linkage member, a positioning member is arranged in the chamber, and the auxiliary member and the positioning member cooperate to fix the blade disk.

[0007] Preferably, the driving member includes a mounting plate arranged on the side wall of the placing table, a second motor is arranged on the upper end of the mounting plate, a rotating rod is arranged on the rotor shaft end of the second motor, a gear is arranged on the outer wall of the rotating rod, the linkage member includes an annular bar 1 arranged on the outer side of the placing table, a gear ring is arranged on the outer side of the annular bar 1, the gear ring is meshed with the gear, an opening is circumferentially provided on the outer wall of the placing table, a connecting plate is circumferentially provided on the inner wall of the annular bar 1, a plurality of groups of the connecting plates are provided with annular bar 2 at one end passing through the opening, a protrusion is provided on the inner wall of the annular bar 2, and arc portions are formed on both sides of the protrusion.

[0008] Preferably, the locking member comprises a locking plate arranged on the upper end surface of the bottom end of the chamber, one end of the locking plate extends to form a locking portion, a plurality of movable holes are arranged in the locking plate, and corresponding interference rings are arranged in the movable holes.

[0009] Preferably, the locking member comprises an arc plate arranged on the upper end surface of the bottom end of the chamber, the arc plate corresponds to the locking plate, a locking area is formed between the arc plate and the locking plate, and the locking area matches the blade groove in turn.

[0010] Preferably, the fixing member includes two groups of fan-shaped grooves 1 arranged in the arc-shaped plate, an arc groove 1 is correspondingly arranged on the inner side of the fan-shaped groove 1, a fan-shaped block 1 is arranged in the fan-shaped groove 1, an arc block 1 is arranged on the outer wall of the fan-shaped block 1, the arc block 1 is correspondingly arranged in the arc groove 1, a fan-shaped groove 2 is arranged in the fan-shaped block 1, an arc groove 2 is correspondingly arranged on the inner side of the fan-shaped groove 2, a fan-shaped block 2 is arranged in the fan-shaped groove 2, an arc block 2 is arranged on the outer wall of the fan-shaped block 2, the arc block 2 is correspondingly arranged in the arc groove 2, and multiple groups of locking blocks are arranged on the outer wall of the fan-shaped block 2.

[0011] Preferably, the resistance member includes a slide groove which is circumferentially arranged in the chamber, a slide rod is arranged in the slide groove, a tension spring is arranged on the side wall of the slide rod, the tension spring is arranged on the inner wall of the slide groove, an auxiliary part is formed in the horizontal direction of the slide rod, a rotating shaft is arranged at the bottom end of the auxiliary part, the rotating shaft is arranged on the upper end surface of the arc plate, and a resistance part is integrally formed on the side wall of the slide rod, and the resistance part cooperates with the protrusion.

[0012] Preferably, the auxiliary part includes an auxiliary cavity arranged in the placing table, an auxiliary rod is circumferentially arranged at the bottom end of the annular strip two, the auxiliary rod is slidably connected in the auxiliary cavity, an auxiliary strip is arranged in the horizontal direction of the auxiliary rod, annular strip three is arranged in the middle of the multiple groups of auxiliary strips, and an extrusion part is circumferentially arranged on the inner wall of the annular strip three.

[0013] Preferably, the positioning member includes a limiting groove which is circumferentially arranged at the bottom end of the chamber, the limiting groove is communicated with the auxiliary cavity, a corresponding sliding connection limiting block is provided in the limiting groove, an auxiliary spring is provided on the inner wall of the limiting groove, the extrusion portion cooperates with the limiting block, a positioning plate is provided on the upper end face of the limiting block, a positioning portion is extended inwardly from the positioning plate, a positioning area is formed between the multiple groups of positioning plates, and the positioning area corresponds to the card slot.

[0014] Preferably, the positioning member also includes a positioning ring arranged in the middle position of the chamber, the positioning ring has a hollow hole in the middle position, the positioning ring is recessed inward to form multiple recessed areas, and a clamping block is provided on the inner wall of the positioning plate, and the clamping block is correspondingly pressed against the recessed area.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the blades are quickly positioned by a mechanical adaptive adjustment mechanism, and multiple groups of blades are locked at the same time by the cooperation of linkage parts and driving parts, so as to avoid internal stress caused by shrinkage when the plastic material is solidified, resulting in deformation of the blades or cracking of the elastic diaphragm, thereby ensuring the accuracy of the fixed position.

[0017] 2. In the present invention, the mutual cooperation between the locking mechanism and the positioning mechanism can quickly fix the impeller and the blades, thereby avoiding the impeller blades from tilting during welding, ensuring the symmetry of the impeller blades after welding, and improving the stability of the operation of the impeller blades after welding.

[0018] 3. In the present invention, the auxiliary parts are driven to move synchronously through the linkage parts, so that the auxiliary parts and the positioning parts cooperate to fix the blade disk, and the device only drives the locking mechanism and the positioning mechanism to move synchronously through the second motor in the driving part, so as to achieve the effect of one drive for multiple uses and save the use cost.

[0019] 4. In the present invention, the second annular strip is driven to rotate by the second motor, so that the extrusion part cooperates with the limiting part, and a corresponding extrusion force is generated on the extrusion part. At this time, the clamping block is in contact with the recessed area. The clamping block is made of rubber. With the extrusion of the positioning block, the clamping block drives the positioning ring to deform, and the protruding part of the blade disk is positioned. Then the positioning part on the positioning plate contacts the blade disk. Therefore, the device ensures the stability of the blade disk during welding through multiple positioning of the positioning part and the positioning ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention provides a schematic diagram of the overall structure of a welding device for centrifugal pump production;

[0021] Figure 2A partial cross-sectional schematic diagram of a welding device for centrifugal pump production is provided in the present invention;

[0022] Figure 3 The present invention provides a schematic diagram of the internal structure of a welding device for centrifugal pump production;

[0023] Figure 4 The present invention provides a cross-sectional schematic diagram of a placement table of a welding device for centrifugal pump production;

[0024] Figure 5 A schematic diagram of a locking mechanism of a welding device for centrifugal pump production proposed by the present invention;

[0025] Figure 6 A schematic diagram of a locking member of a welding device for producing a centrifugal pump is provided for the present invention;

[0026] Figure 7 A schematic diagram of a fixing part of a welding device for producing a centrifugal pump is provided for the present invention;

[0027] Figure 8 A schematic diagram of a positioning mechanism of a welding device for centrifugal pump production proposed by the present invention;

[0028] Fig. 9 The present invention provides a schematic diagram of a positioning member of a welding device for producing a centrifugal pump.

[0029] In the figure: 100, bottom plate; 101, welding robot arm; 102, turntable; 103, motor 1; 104, support column; 105, placement table; 106, chamber; 107, blade slot; 108, card slot; 200, locking mechanism; 201, driving member; 202, linkage member; 203, locking member; 204, fixing member; 205, resistance member; 300, positioning mechanism; 301, auxiliary member; 302, fixed member Positioning member; 201a, mounting plate; 201b, motor 2; 201c, rotating rod; 201d, gear; 202a, ring bar 1; 202b, gear ring; 202c, opening; 202d, connecting plate; 202e, ring bar 2; 202f, protrusion; 202h, arc portion; 203a, locking plate; 203b, locking portion; 203c, movable hole; 203d, abutment ring; 203e, arc plate ; 203f, locking area; 204a, fan-shaped groove 1; 204b, arc-shaped groove 1; 204c, fan-shaped block 1; 204d, arc-shaped block 1; 204e, fan-shaped groove 2; 204f, arc-shaped groove 2; 204g, fan-shaped block 2; 204h, arc-shaped block 2; 204i, locking block; 205a, slide groove; 205b, slide rod; 205c, tension spring; 205d, auxiliary part; 205e, shaft; 20 5f, interference part; 301a, auxiliary cavity; 301b, auxiliary rod; 301c, auxiliary strip; 301d, annular strip three; 301e, extrusion part; 302a, limiting groove; 302b, limiting block; 302c, auxiliary spring; 302d, positioning plate; 302e, positioning part; 302f, positioning area; 302g, positioning ring; 302h, hollow hole; 302i, recessed area; 302j, pressing block. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Embodiment 1 A welding device for centrifugal pump production proposed by the present invention is further described, including a base plate 100 and a welding robot arm 101, a turntable 102 is provided on the upper end surface of the base plate 100, a motor 103 for driving the turntable 102 is provided on the upper end surface of the base plate 100, a support column 104 is fixedly connected to the upper end surface of the turntable 102, a placing table 105 is installed on the upper end surface of the support column 104, a locking mechanism 200 for pressing the blades is provided in the placing table 105, a chamber 106 is formed in the placing table 105, a blade groove 107 is circumferentially provided on the upper end surface of the placing table 105, the chamber 106 is connected to the blade groove 107, and a card slot 108 is provided in the middle position of the chamber 106;

[0034] Depend on Figures 1 to 5 It can be seen that during welding, the welding end of the ion arc welding gun on the welding robot arm 101 relies on the robot arm to move to improve the accuracy of the welding position. The bottom end is rotatably connected to a turntable 102. The turntable 102 adjusts the angle of the turntable 102 through a transmission structure and a motor 103. The motor 103 is controlled by an external controller. The transmission structure is inside and is not shown in the figure. A cylindrical chamber 106 is formed in the placement table 105. Two sets of blade grooves 107 are formed on the upper end surface of the chamber 106. The blades are placed in the blade grooves 107. The blades are locked by a locking mechanism 200 to prevent the blades from being tilted during welding.

[0035] The present invention provides a locking mechanism 200 in the chamber 106, the locking mechanism 200 includes a driving member 201 arranged outside the placement table 105, a linkage member 202 is provided in the chamber 106, a locking member 203 is circumferentially provided in the chamber 106, a fixing member 204 is provided in the locking member 203, and a resisting member 205 is also provided on the locking member 203. The locking mechanism 200 is provided in the corresponding blade groove 107, and the locking member 203 fixes the blade through the cooperation of the linkage member 202 and the resisting member 205. Compared with the above scheme, the present invention quickly positions the blade through a mechanical adaptive adjustment mechanism, and locks multiple groups of blades at the same time through the cooperation of the linkage member 202 and the driving member 201, so as to avoid the problem of deformation of the blade or cracking of the elastic diaphragm when the plastic material is solidified due to internal stress caused by shrinkage, resulting in the problem of fixed position deviation;

[0036] In order to further improve the welding efficiency of the blades, the present invention further limits the locking mechanism 200, and a positioning mechanism 300 is also provided in the locking mechanism 200. The positioning mechanism 300 includes an auxiliary part 301 arranged at the bottom end of the linkage part 202, and a positioning part 302 is arranged in the chamber 106. When the locking mechanism 200 is in operation, it drives the auxiliary part 301 to move synchronously through the linkage part 202, so that the auxiliary part 301 and the positioning part 302 cooperate to fix the blade disk. In this way, the device can quickly fix the blade disk and the blades through the mutual cooperation between the locking mechanism 200 and the positioning mechanism 300, and the device only realizes the overall fixation of the device through the motor 2 201b in the driving part 201, saving the use cost.

[0037] Working principle: When in use, first put the blade into the blade groove 107, then clamp the protrusion 202f of the blade disk into the clamping groove 108, and then quickly position the blade through the mechanical adaptive adjustment mechanism, and through the cooperation of the linkage member 202 and the driving member 201, lock multiple groups of blades at the same time to avoid the problem of internal stress caused by shrinkage when the plastic material solidifies, causing blade deformation or elastic diaphragm cracking, resulting in fixed position deviation. When the locking mechanism 200 is used, it drives the positioning mechanism 300 to operate synchronously. In this way, through the mutual cooperation between the locking mechanism 200 and the positioning mechanism 300, the blade disk and the blade can be quickly fixed, thereby avoiding the impeller blade from tilting during welding, ensuring the symmetry of the impeller blade after welding, and improving the stability of the operation of the impeller blade after welding.

[0038] Embodiment 2

[0039] The following technical features are added on the basis of the first embodiment: the locking mechanism 200 includes a driving member 201 arranged outside the placement table 105, a linkage member 202 is arranged in the chamber 106, a locking member 203 is arranged circumferentially in the chamber 106, a fixing member 204 is arranged in the locking member 203, and a resisting member 205 is also arranged on the locking member 203. The locking mechanism 200 is arranged in the corresponding blade groove 107. The device locks multiple groups of blades at the same time through the cooperation of the linkage member 202 and the driving member 201, so as to avoid the problem of deformation of the blades or cracking of the elastic diaphragm, which may be caused by internal stress generated by shrinkage when the plastic material is solidified, resulting in the problem of fixed position deviation;

[0040] The driving member 201 includes a mounting plate 201a fixedly connected to the side wall of the placement table 105, and a motor 201b is detachably mounted on the upper end of the mounting plate 201a by bolts. A rotating rod 201c is fixedly connected to the rotor shaft end of the motor 201b, and a gear 201d is keyed to the outer wall of the rotating rod 201c. The linkage member 202 includes an annular strip 1 202a rotatably connected to the outer side of the placement table 105, a gear ring 202b is fixedly connected to the outer side of the annular strip 1 202a, and the gear ring 202b is meshed with the gear 201d. An opening 202c is circumferentially provided on the outer wall of the placement table 105, and a connecting plate 202d is circumferentially fixedly connected to the inner wall of the annular strip 1 202a, and a plurality of groups of connecting plates 202d are fixedly connected to an annular strip 202e at one end passing through the opening 202c, and a protrusion 202f is fixedly connected to the inner wall of the annular strip 202e, and arc portions 202h are formed on both sides of the protrusion 202f;

[0041] Depend on Figures 1 to 6 It can be seen that the outer side of the placing table 105 is provided with three groups of openings 202c in a circumferential manner, and the corresponding connecting plates 202d are slidably connected in the openings 202c. The two ends of the connecting plate 202d are respectively fixedly connected to the annular strip 1 202a and the annular strip 202e. The outer side of the annular strip 202e is fixedly connected with a gear ring 202b, so that the gear 201d on the rotating rod 201c is driven to rotate by the motor 201b. Since the gear 201d is meshed with the gear ring 202b, the annular strip 1 202a and the annular strip 202e are driven to rotate. The annular bar 202e rotates synchronously. When in use, the motor 201b is controlled by an external controller. The motor 201b drives the gear 201d to rotate through the rotating rod 201c. The gear 201d is meshed with the ring gear 202b. In this way, the annular bar 1 202a is driven to rotate through the ring gear 202b. When the annular bar 1 202a rotates, the connecting plate 202d is driven to slide in the opening 202c. When the connecting plate 202d rotates, the protruding portion 202f on the inner side of the annular bar 202e is driven to rotate.

[0042] The locking member 203 includes a locking plate 203a fixedly connected to the upper end surface of the bottom end of the chamber 106, one end of the locking plate 203a extends to form a locking portion 203b, a plurality of movable holes 203c are provided in the locking plate 203a, and correspondingly, a resisting ring 203d is rotatably connected in the movable holes 203c, and the locking member 203 includes an arc plate 203e slidably connected to the upper end surface of the bottom end of the chamber 106, the arc plate 203e corresponds to the locking plate 203a, and a locking area 203f is formed between the arc plate 203e and the locking plate 203a, and the locking area 203f matches the blade slot 107 in sequence;

[0043] Depend on Figures 2 to 6It can be seen that there are six groups of locking members 203, which are arranged in a circle inside the chamber 106. The locking member 203 consists of a locking plate 203a and an arc plate 203e. The locking plate 203a is fixedly installed on the upper end surface of the bottom end of the chamber 106, and the arc plate 203e is slidably connected to the upper end surface of the chamber 106. Three groups of abutment rings 203d are rotatably connected in the locking plate 203a through bearings. A locking area 203f is formed between the arc plate 203e and the locking plate 203a. The locking area 203f is matched with the blade groove 107 in turn. The blade is inserted into the blade groove 107. The distance between the arc plate 203e and the locking plate 203a is continuously shortened, so that the arc plate 203e and the locking plate 203a fix the blade.

[0044] The fixing member 204 includes two groups of fan-shaped grooves 1 204a arranged in the arc plate 203e, and the inner side of the fan-shaped groove 1 204a is correspondingly provided with an arc groove 1 204b, a fan-shaped block 1 204c is slidably connected in the fan-shaped groove 1 204a, and an arc block 1 204d is fixedly connected to the outer wall of the fan-shaped block 1 204c, and the arc block 1 204d is correspondingly arranged in the arc groove 1 204b, a fan-shaped groove 204e is provided in the fan-shaped block 1 204c, and an arc groove 204f is correspondingly provided on the inner side of the fan-shaped groove 204e, a fan-shaped block 204g is slidably connected in the fan-shaped groove 204e, and an arc block 204h is fixedly connected to the outer wall of the fan-shaped block 204g, and the arc block 204h is correspondingly arranged in the arc groove 204f, and the outer wall of the fan-shaped block 204g is fixedly connected with a plurality of groups of locking blocks 204i;

[0045] In order to further lock the blade, the present invention further defines the structure of the arc plate 203e, by providing two groups of fan-shaped blocks 204c, and the fan-shaped block 204c is slidably connected in the fan-shaped groove 204a, and at the same time, the fan-shaped block 204c is slidably connected in the fan-shaped block 204g through the fan-shaped groove 2, so when the arc plate 203e contacts the blade, its fan-shaped block 204g rotates in the arc-shaped groove 204f through the arc-shaped block 204h, which can adapt to the bending angle of the blade, so that the locking block 204i on the fan-shaped block 204g fixes the blade, ensuring that the blade will not tilt during welding;

[0046] The resisting member 205 includes a slide groove 205a which is circumferentially arranged in the chamber 106, a slide rod 205b is slidably connected in the slide groove 205a, a tension spring 205c is fixedly connected to the side wall of the slide rod 205b, the tension spring 205c is a carbon spring with high strength and convenient for daily use, the tension spring 205c is fixedly connected to the inner wall of the slide groove 205a, an auxiliary part 205d is formed in the horizontal direction of the slide rod 205b, a rotating shaft 205e is fixedly connected to the bottom end of the auxiliary part 205d, the rotating shaft 205e is rotatably connected to the upper end surface of the arc plate 203e, and a resisting part 205f is integrally formed on the side wall of the slide rod 205b, and the resisting part 205f cooperates with the protruding part 202f;

[0047] Depend on Figures 3 to 6 As can be seen, six groups of slide grooves 205a are arranged in a circle in the chamber 106, and a slide rod 205b is slidably connected in the slide groove 205a. The bottom end of the slide rod 205b is T-shaped, and the slide groove 205a is a groove-shaped structure that matches the T-shaped slide rod 205b. The slide rod 205b is fixedly connected to the inner wall of the slide groove 205a through a tension spring 205c, and the slide rod 205b is rotatably connected to the arc plate 203e through a rotating shaft 205e. When the arc plate 203e is rotated, When the sliding bar 205b contacts the blade, it can rotate to adapt to the bending angle of the blade, so as to quickly lock the blade. The side wall of the sliding bar 205b is integrally formed with a resistance part 205f. When the protruding part 202f on the inner side of the annular strip 202e rotates, the protruding part 202f contacts the resistance part 205f, thereby driving the sliding bar 205b to slide in the sliding groove 205a, so as to achieve the effect of moving the arc plate 203e.

[0048] Working principle: It can be seen from Example 1 that when the blades are locked, it is only necessary to start the motor 201b through the external controller. The motor 201b drives the gear 201d to rotate through the rotating rod 201c, and the gear 201d is engaged with the ring gear 202b. In this way, the ring gear 202b drives the annular strip 1 202a to rotate. When the annular strip 1 202a rotates, it drives the connecting plate 202d to slide in the opening 202c. When the connecting plate 202d rotates, it drives the protruding portion 202f on the inner side of the annular strip 202e to rotate. When the protruding portion 202f rotates, it contacts the abutting portion 205f. The abutting portion 205f on the slide bar 205b is subjected to a corresponding extrusion force, thereby driving the slide bar 205b to rotate. The arc plate 203e on the slide bar 205b is close to the locking plate 203a, thereby fixing the blade in the locking area 203f. Since the fan-shaped block 1 204c is slidably connected in the fan-shaped groove 1 204a, and the fan-shaped block 1 204c is slidably connected in the fan-shaped groove 204g through the fan-shaped groove 2, when the arc plate 203e contacts the blade, the fan-shaped block 204g rotates in the arc-shaped groove 204f through the arc-shaped block 204h, which can adapt to the bending angle of the blade. In this way, the locking block 204i on the fan-shaped block 204g fixes the blade to ensure that the blade will not tilt during welding.

[0049] When welding is completed, the motor 201b drives the annular strip 202a to rotate. At this time, the protrusion 202f is no longer in contact with the resistance part 205f. Due to the restoring force of the tension spring 205c, the slide rod 205b is driven to slide in the slide groove 205a. At this time, the locking state of the blades is released, so that the impeller and the blades can be taken out.

[0050] Embodiment 3

[0051] The following technical features are added on the basis of the second embodiment: the positioning mechanism 300 includes an auxiliary member 301 arranged at the bottom end of the linkage member 202, and the positioning member 302 is arranged in the chamber 106. When the locking mechanism 200 is in operation, it drives the auxiliary member 301 to move synchronously through the linkage member 202, so that the auxiliary member 301 and the positioning member 302 cooperate to fix the leaf disk. In this way, the device can quickly fix the leaf disk and the blades through the mutual cooperation between the locking mechanism 200 and the positioning mechanism 300, and the device only uses the driving member 202 to fix the leaf disk. The motor 201b in 01 realizes the overall fixation of the device, saving the use cost. The auxiliary part 301 includes an auxiliary cavity 301a arranged in the placement table 105, the bottom end of the annular strip 202e is circumferentially fixedly connected with an auxiliary rod 301b, the auxiliary rod 301b is slidably connected in the auxiliary cavity 301a, the auxiliary rod 301b is horizontally fixedly connected with an auxiliary strip 301c, the middle of the multiple groups of auxiliary strips 301c is fixedly connected with an annular strip 301d, and the inner wall of the annular strip 301d is circumferentially fixedly connected with an extrusion part 301e;

[0052] Depend on Figure 4 It can be seen that a circular auxiliary cavity 301a is formed in the placement table 105. Figure 8 As is known, the bottom end of the annular strip 202e is fixedly connected with an auxiliary rod 301b, and the auxiliary rod 301b is slidably connected in the auxiliary cavity 301a. The upper end surface of the auxiliary cavity 301a is circumferentially provided with three groups of auxiliary grooves, and the auxiliary grooves are arc-shaped structures connecting the chamber 106 and the auxiliary cavity 301a, which are not shown in the figure. The bottom end of the auxiliary rod 301b is correspondingly fixedly connected with an auxiliary strip 301c, and the three groups of auxiliary strips 301c are fixedly connected with an annular strip 301d. When the annular strip 202e rotates, the auxiliary rod 301b and the auxiliary strip 301c at the bottom of the auxiliary rod 301b are driven to rotate synchronously, and at this time, the extrusion part 301e on the annular strip 301d rotates synchronously;

[0053] The positioning member 302 includes a limiting groove 302a which is circumferentially arranged at the bottom end of the chamber 106, the limiting groove 302a is connected to the auxiliary cavity 301a, a limiting block 302b is slidably connected in the limiting groove 302a, an auxiliary spring 302c is fixedly connected to the inner wall of the limiting block 302b, the auxiliary spring 302c is fixedly connected to the inner wall of the limiting groove 302a, the extrusion portion 301e cooperates with the limiting block 302b, a positioning plate 302d is fixedly connected to the upper end surface of the limiting block 302b, a positioning portion 302e is extended inwardly from the positioning plate 302d, a positioning area 302f is formed between the multiple groups of positioning plates 302d, and the positioning area 302f corresponds to the slot 108;

[0054] Depend on Figures 4 to 9It can be seen that the bottom end of the chamber 106 is circumferentially provided with three groups of long strip-shaped limiting grooves 302a, the limiting grooves 302a are connected to the limiting blocks 302b through auxiliary springs 302c, the limiting blocks 302b are fixedly connected with arc-shaped positioning plates 302d, and the positioning plates 302d are arranged on the inner circle of the annular strip 301d. When the annular strip 301d rotates, the extrusion part 301e is driven to rotate synchronously. At this time, the extrusion part 301e cooperates with the limiting part to generate corresponding extrusion force on the extrusion part 301e, thereby The three groups of positioning blocks are driven to move toward the center. The positioning member 302 also includes a positioning ring 302g fixedly connected to the middle position of the chamber 106. The middle position of the positioning ring 302g is formed with a hollow hole 302h. The positioning ring 302g is recessed inward to form a plurality of recessed areas 302i. The inner wall of the positioning plate 302d is fixedly connected with a clamping block 302j. The clamping block 302j is made of soft rubber material. The clamping block 302j is correspondingly pressed against the recessed area 302i. The positioning ring 302g is made of elastic and deformable material. Figures 8 to 9 It can be seen that the positioning ring 302g is arranged in the positioning area 302f, the protrusion 202f of the blade disk is placed in the slot 108, and the blade disk is positioned by the positioning ring 302g and the positioning portion 302e on the positioning plate 302d;

[0055] Working principle: As can be seen from Example 1, when the protruding portion 202f of the leaf disk is placed in the slot 108, the annular strip 202e is driven to rotate by the motor 201b. When the annular strip 202e rotates, the auxiliary rod 301b and the auxiliary strip 301c at the bottom of the auxiliary rod 301b are driven to rotate synchronously. At this time, the extrusion portion 301e on the annular strip 301d rotates synchronously. The extrusion portion 301e cooperates with the limiting portion to generate a corresponding extrusion force on the extrusion portion 301e, thereby driving the three groups of positioning blocks to move toward the center. The pressing block 302j is made of rubber and as the positioning block is squeezed, the pressing block 302j drives the positioning ring 302g to deform, thereby positioning the protruding portion 202f of the blade disk. Then the positioning portion 302e on the positioning plate 302d contacts the blade disk, thereby achieving rapid fixation of the blade disk. In this way, the device can achieve rapid fixation of the blade and the blade disk through the cooperation of the locking mechanism 200 and the positioning mechanism 300, thereby avoiding deviation in the blade shaping position.

[0056] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A welding device for producing centrifugal pumps, comprising a base plate (100) and a welding robot arm (101), wherein a turntable (102) is disposed on the upper end surface of the base plate (100), a motor (103) for driving the turntable (102) is disposed on the upper end surface of the base plate (100), and a support column (104) is disposed on the upper end surface of the turntable (102), wherein: The upper end surface of the support column (104) is provided with a placement platform (105), a locking mechanism (200) for pressing the blades is provided in the placement platform (105), a chamber (106) is formed in the placement platform (105), a blade groove (107) is circumferentially provided on the upper end surface of the placement platform (105), the chamber (106) is connected to the blade groove (107), a clamping groove (108) is provided in the middle position of the chamber (106), and a positioning mechanism (300) is provided in the locking mechanism (200); The locking mechanism (200) comprises a driving member (201) arranged outside the placement platform (105); a linkage member (202) is arranged in the chamber (106); a locking member (203) is arranged in a circumferential manner in the chamber (106); a fixing member (204) is arranged in the locking member (203); a resisting member (205) is also arranged on the locking member (203); the linkage member (202) and the resisting member (205) cooperate with each other so that the locking member (203) fixes the blade.

2. A welding device for centrifugal pump production according to claim 1, characterized in that: The positioning mechanism (300) comprises an auxiliary member (301) arranged at the bottom end of the linkage member (202), a positioning member (302) is arranged in the chamber (106), and the auxiliary member (301) and the positioning member (302) cooperate to fix the blade disk.

3. A welding device for centrifugal pump production according to claim 2, characterized in that: The driving member (201) comprises a mounting plate (201a) arranged on the side wall of the placement platform (105), a second motor (201b) is arranged on the upper end surface of the mounting plate (201a), a rotating rod (201c) is arranged on the rotor shaft end of the second motor (201b), a gear (201d) is arranged on the outer wall of the rotating rod (201c), and the linkage member (202) comprises an annular strip (202a) arranged on the outer side of the placement platform (105), a gear ring (201d) is arranged on the outer side of the annular strip (202a), and a gear ring (201d) is arranged on the outer side of the annular strip (202a). 02b), the gear ring (202b) is meshed with the gear (201d), the outer wall of the placement table (105) is circumferentially provided with an opening (202c), the inner wall of the annular strip 1 (202a) is circumferentially provided with a connecting plate (202d), a plurality of groups of the connecting plates (202d) are passed through one end of the opening (202c) and an annular strip 2 (202e) is provided, the inner wall of the annular strip 2 (202e) is provided with a protrusion (202f), and arc portions (202h) are formed on both sides of the protrusion (202f).

4. A welding device for centrifugal pump production according to claim 3, characterized in that: The locking member (203) comprises a locking plate (203a) arranged on the upper end surface of the bottom end of the chamber (106), one end of the locking plate (203a) extending to form a locking portion (203b), a plurality of groups of movable holes (203c) are arranged in the locking plate (203a), and correspondingly, abutment rings (203d) are arranged in the movable holes (203c).

5. A welding device for centrifugal pump production according to claim 4, characterized in that: The locking member (203) comprises an arc-shaped plate (203e) arranged on the upper end surface of the bottom end of the chamber (106), the arc-shaped plate (203e) corresponds to the locking plate (203a), a locking area (203f) is formed between the arc-shaped plate (203e) and the locking plate (203a), and the locking area (203f) matches the blade groove (107) in turn.

6. A welding device for centrifugal pump production according to claim 5, characterized in that: The fixing member (204) comprises two groups of fan-shaped grooves (204a) arranged in the arc-shaped plate (203e), the inner side of the fan-shaped groove (204a) is provided with a corresponding arc-shaped groove (204b), the fan-shaped groove (204a) is provided with a fan-shaped block (204c) in the fan-shaped groove (204a), the outer wall of the fan-shaped block (204c) is provided with a fan-shaped block (204d), the fan-shaped block (204d) is correspondingly arranged in the arc-shaped groove (204b), and the fan-shaped block (204c) is provided with a fan-shaped block (204d). 04c) is provided with a fan-shaped groove 2 (204e), the inner side of the fan-shaped groove 2 (204e) is correspondingly provided with an arc-shaped groove 2 (204f), the fan-shaped groove 2 (204e) is provided with a fan-shaped block 2 (204g), the outer wall of the fan-shaped block 2 (204g) is provided with an arc-shaped block 2 (204h), the arc-shaped block 2 (204h) is correspondingly arranged in the arc-shaped groove 2 (204f), and the outer wall of the fan-shaped block 2 (204g) is provided with multiple groups of locking blocks (204i).

7. A welding device for centrifugal pump production according to claim 6, characterized in that: The resistance member (205) comprises a slide groove (205a) which is circumferentially arranged in the chamber (106); a slide rod (205b) is arranged in the slide groove (205a); a tension spring (205c) is arranged on the side wall of the slide rod (205b); the tension spring (205c) is arranged on the inner wall of the slide groove (205a); an auxiliary part (205d) is formed in the horizontal direction of the slide rod (205b); a rotating shaft (205e) is arranged at the bottom end of the auxiliary part (205d); the rotating shaft (205e) is arranged on the upper end surface of the arc plate (203e); a resistance part (205f) is integrally formed on the side wall of the slide rod (205b); and the resistance part (205f) cooperates with the protrusion (202f).

8. A welding device for centrifugal pump production according to claim 7, characterized in that: The auxiliary component (301) includes an auxiliary cavity (301a) arranged in the placement table (105), an auxiliary rod (301b) is circumferentially arranged at the bottom end of the annular strip (202e), the auxiliary rod (301b) is slidably connected in the auxiliary cavity (301a), and an auxiliary strip (301c) is arranged in the horizontal direction of the auxiliary rod (301b), and an annular strip (301d) is arranged in the middle of multiple groups of the auxiliary strips (301c), and the inner wall of the annular strip (301d) is circumferentially arranged with an extrusion portion (301e).

9. A welding device for centrifugal pump production according to claim 8, characterized in that: The positioning member (302) includes a limiting groove (302a) arranged in a circular shape at the bottom end of the chamber (106), the limiting groove (302a) is connected to the auxiliary cavity (301a), and a limiting block (302b) is slidably connected in the limiting groove (302a) correspondingly, and an auxiliary spring (302c) is arranged on the inner wall of the limiting block (302b), and the auxiliary spring (302c) is arranged on the inner wall of the limiting groove (302a), the extrusion portion (301e) cooperates with the limiting block (302b), and a positioning plate (302d) is arranged on the upper end surface of the limiting block (302b), and the positioning plate (302d) extends inwardly with a positioning portion (302e), and a positioning area (302f) is formed between multiple groups of the positioning plates (302d), and the positioning area (302f) corresponds to the slot (108).

10. A welding device for centrifugal pump production according to claim 9, characterized in that: The positioning member (302) further comprises a positioning ring (302g) arranged in the middle of the chamber (106); a hollow hole (302h) is formed in the middle of the positioning ring (302g); the positioning ring (302g) is recessed inward to form a plurality of recessed areas (302i); a clamping block (302j) is arranged on the inner wall of the positioning plate (302d); and the clamping block (302j) is correspondingly pressed against the recessed area (302i).

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