Automatic positioning and embedding device and method for pump head assembly and capable of improving assembly consistency

Abstract

The invention relates to the technical field of automatic equipment, in particular to an automatic positioning and embedding device and method for pump head assembly and capable of improving assembly consistency. The embedding device comprises a rack, a fixing mechanism and an embedding manipulator; a supporting cylinder is arranged on the rack; the fixing mechanism comprises a first mounting seat, a contraction assembly and a first linear driver; the number of the first mounting seats is at least two, the first mounting seats are arranged on the rack, and each first mounting seat is movably provided with a clamping block; the contraction assembly is used for controlling the first mounting base to move in the radial direction of the supporting cylinder; the driving assembly is used for driving the contraction assembly; and the embedding manipulator is used for moving the part to the supporting cylinder. The function of assembling valve bodies of different sizes to the supporting barrel is achieved, and the effect that the valve bodies can be stably fixed to the supporting barrel through contraction of the multiple mounting bases and clamping blocks is achieved. The problems that in the assembling process of existing assembling equipment, due to unstable clamping, a workpiece is dislocated and inclined are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automated equipment, and in particular to an automatic positioning and fitting device and method for pump head assembly for improving assembly consistency. Background Art

[0002] During the assembly process of the spray pump head, multiple components (pump core, valve body, spring, sealing ring, etc.) need to be precisely fitted together. Traditional assembly methods rely on fixed guides or manual assistance, which are prone to problems such as misalignment and loose fitting, affecting product consistency and sealing performance.

[0003] To this end, a Chinese patent application with application publication number CN119238060A discloses a rotary step-by-step automatic assembly device and method for a nozzle pump core sealing ring. Through precise positioning among the nozzle pump core discharge mechanism, the sealing ring vertical discharge mechanism, the rotary assembly mechanism, and the discharge mechanism, each workpiece is assembled in sequence with continuous movements, simple and ingenious, and efficient connection, thereby replacing the traditional manual assembly production mode and improving the level of automated production management of the nozzle pump core sealing ring.

[0004] However, most of the existing assembly equipment is for fixed-model nozzle pumps. When replacing workpieces of different sizes, unstable clamping may occur, which may lead to workpiece misalignment and skewness during the feeding process, making it impossible to use them compatibly. Summary of the invention

[0005] In view of the above problems, an automatic positioning and fitting device and method for pump head assembly that improves assembly consistency are provided. The problem of workpiece misalignment and skewness caused by unstable clamping during the assembly process of existing assembly equipment is solved through a frame, a fixing mechanism and an fitting robot.

[0006] In order to solve the problems of the prior art, the present invention provides an automatic positioning and interlocking device for pump head assembly that improves assembly consistency, comprising a frame, a fixing mechanism and an interlocking robot; a support cylinder is provided on the frame; the fixing mechanism comprises a first mounting seat, a contraction assembly and a first linear drive; at least two first mounting seats are provided, the first mounting seats are arranged on the frame, and each first mounting seat is movably provided with a clamping block; the contraction assembly is used to control the radial movement of the first mounting seat along the support cylinder, and the driving assembly is used to drive the contraction assembly; the interlocking robot is used to move the parts to the support cylinder.

[0007] Preferably, a control mechanism is provided on the frame, which includes a sensing component, a limiting component and a control component; the sensing component is used to sense whether the clamping block is in abutment with the valve body; the limiting component is used to limit the movement of the embedded manipulator toward the support tube; the control component is used to release the movement restriction of the embedded manipulator by the limiting component.

[0008] Preferably, the contraction assembly includes a base, a first elastic member, and a second elastic member; the base is disposed on the frame, and the first mounting seat is movably disposed on the base; two ends of the first elastic member 222 are respectively connected to the first mounting seat 21 and the clamping block 211, two ends of the second elastic member are respectively connected to the base and the first mounting seat, the first elastic member is horizontally disposed, and the second elastic member is vertically disposed.

[0009] Preferably, the driving assembly includes a first linear driver, a pressing ring, a first guide rod, and a third elastic member; the first linear driver is disposed on the frame, and a driving end of the first linear driver is connected with a mounting block; the first guide rod is connected to the pressing ring, and a limiting block is disposed on the first guide rod; two ends of the third elastic member are respectively connected to the pressing ring and the mounting block; a roller is rotatably disposed on the pressing ring, and the roller is in rolling fit with an inclined plate on the clamping block.

[0010] Preferably, the sensing assembly includes a hinge seat, a first connecting rod, and a second connecting rod; the hinge seat is disposed on the mounting block; the first connecting rod is hinged to the hinge seat, two ends of the second connecting rod are respectively hinged to the limiting block and the first connecting rod; and the second connecting rod is in transmission connection with the control assembly.

[0011] Preferably, the limiting assembly includes a second mounting seat, a movable rod, a stop block, and a fourth elastic member; the second mounting seat is disposed on the frame, and the movable rod is slidably mounted on the second mounting seat; the stop block is connected to the movable rod, and two ends of the fourth elastic member are respectively connected to the movable rod and the second mounting seat.

[0012] Preferably, the control assembly includes a clamping rod and a push rod; the clamping rod and the push rod are both slidably mounted on the second mounting seat, a nitrogen spring is disposed on the second mounting seat, the clamping rod is connected to a piston rod of the nitrogen spring, and the second connecting rod is in transmission connection with the push rod; a clamping groove cooperating with the clamping rod is formed on the movable rod.

[0013] Preferably, a first guide rail is connected to the push rod; a first fixed shaft is disposed on the second connecting rod, and the first fixed shaft is in sliding fit with the first guide rail.

[0014] Preferably, a second fixed shaft is disposed on the movable rod; a second linear driver is disposed on the second mounting seat, and a push block for pushing the second fixed shaft is disposed on a driving end of the second linear driver.

[0015] An automatic positioning and fitting method for a pump head assembly to improve assembly consistency includes the following steps: S1. Place the valve body on the support cylinder; S2. Start the driving assembly, and the driving assembly controls the clamping block to contract through the contraction assembly, and the clamping block fixes the valve body to the support cylinder; S3. Start the fitting manipulator to perform the assembly work; S4. After the assembly work is completed, the fitting manipulator removes the workpiece.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: 1. The present invention realizes the function of assembling valve bodies of different sizes onto the support cylinder through the frame, the fixing mechanism and the fitting manipulator, and can stably fix the valve body onto the support cylinder through the contraction of multiple mounting seats and clamping blocks. Moreover, the clamping block has a main rod in the vertical direction and a folding rod in the horizontal direction, and the main rod and the folding rod apply pressure to the valve body in two directions simultaneously, thereby fixing the valve body onto the support cylinder, solving the problem that the existing assembly equipment causes workpiece misalignment and skew due to unstable clamping during the assembly process. And through the contraction cooperation of multiple clamping blocks, valve bodies of different sizes can be adapted, and then the assembly actions of pump heads of different models can be completed; 2. The present invention realizes the function of automatically judging the fixing situation of the valve body through the induction component, the limiting component and the control component, and automatically performs the assembly action through the cooperation of the fitting manipulator after the valve body is fixed, achieving the effect of automatic assembly, and avoiding the situation that parts are damaged due to mutual extrusion during the assembly action when the valve body is not installed in place. When the induction component senses that the clamping block abuts against the valve body, the control component releases the movement restriction of the limiting component on the fitting manipulator; 3. The present invention realizes the function that the clamping block can move in the vertical direction and the horizontal direction during contraction through the base, the first elastic member and the second elastic member, and then can achieve the effect of fixing valve bodies of different sizes. During fixing, the driving component is used to control the clamping block to move in the vertical direction and the horizontal direction, so that even if the thickness and diameter of the valve body are different, the position of the folding plate of the clamping block can stably cooperate with the valve body. Description of the Drawings

[0017] Figure 1 is a three-dimensional schematic diagram of the automatic positioning and fitting device for pump head assembly with improved assembly consistency of the present invention; Figure 2 is a three-dimensional schematic diagram of the support cylinder, the fixing mechanism and the control mechanism in the automatic positioning and fitting device for pump head assembly with improved assembly consistency of the present invention; Figure 3 is a three-dimensional schematic diagram of the automatic positioning and fitting device for pump head assembly with improved assembly consistency of the present invention in the working state; Figure 4 is a three-dimensional schematic diagram of the base, the mounting seat and the clamping block in the automatic positioning and fitting device for pump head assembly with improved assembly consistency of the present invention; Figure 5 is a three-dimensional schematic diagram of the clamping block and the driving component in the automatic positioning and fitting device for pump head assembly with improved assembly consistency of the present invention; Figure 6 is of the present invention Figure 5 partial enlarged schematic diagram at A in Figure 7It is a three-dimensional schematic diagram of the control mechanism in the automatic positioning and fitting device for pump head assembly to improve assembly consistency of the present invention; Figure 8 It is of the present invention Figure 7 Partial enlarged schematic diagram at position B in Figure 9 It is a three-dimensional schematic diagram of the limiting component in the automatic positioning and fitting device for pump head assembly to improve assembly consistency of the present invention; Figure 10 It is a three-dimensional schematic diagram of the induction component and the control component in the automatic positioning and fitting device for pump head assembly to improve assembly consistency of the present invention when in the reset state.

[0018] The reference numerals in the figure are: 1, frame; 11, support cylinder; 12, second guide rail; 121, second movable block; 2, fixing mechanism; 21, first mounting seat; 211, clamping block; 22, contraction component; 221, base; 222, first elastic member; 223, second elastic member; 23, driving component; 231, first linear driver; 2311, mounting block; 232, pressing ring; 233, first guide rod; 2331, limiting block; 234, third elastic member; 3, fitting manipulator; 4, control mechanism; 41, induction component; 411, hinge seat; 412, first connecting rod; 413, second connecting rod; 4131, first fixed shaft; 42, limiting component; 421, second mounting seat; 422, movable rod; 4221, card slot; 4222, second fixed shaft; 423, stop block; 424, fourth elastic member; 425, second linear driver; 4251, push block; 43, control component; 431, clamping rod; 432, push rod; 4321, first guide rail; 4322, first movable block; 4323, third guide rod; 4324, fifth elastic member. Detailed implementation manners

[0019] To further understand the features, technical means, and specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0020] Refer to Figures 1 - 3 : The automatic positioning and fitting device for pump head assembly to improve assembly consistency includes a frame 1, a fixing mechanism 2, and a fitting manipulator 3; a support cylinder 11 is provided on the frame 1; the fixing mechanism 2 includes a first mounting seat 21, a contraction component 22, and a first linear driver 231; there are at least two first mounting seats 21, the first mounting seats 21 are arranged on the frame 1, and a clamping block 211 is movably arranged on each first mounting seat 21; the contraction component 22 is used to control the first mounting seat 21 to move along the radial direction of the support cylinder 11, and the driving component 23 is used to drive the contraction component 22; the fitting manipulator 3 is used to move parts to the support cylinder 11.

[0021] The present invention realizes the function of assembling valve bodies of different sizes onto the support cylinder 11 through the frame 1, the fixing mechanism 2 and the fitting manipulator 3, and can stably fix the valve body onto the support cylinder 11 through the contraction of a plurality of first mounting seats 21 and clamping blocks 211. Moreover, the clamping block 211 has a main rod in the vertical direction and a folding rod in the horizontal direction, and the main rod and the folding rod apply pressure to the side and top of the valve body in two directions respectively, so as to fix the valve body onto the support cylinder 11, solving the problem that the existing assembly equipment causes the workpiece to be misaligned and skewed due to unstable clamping during the assembly process. And the contraction cooperation of a plurality of clamping blocks 211 can adapt to valve bodies of different sizes, so as to complete the assembly actions of pump heads of different models. During the installation process, the operator sleeves the valve body onto the support cylinder 11. Then, the driving component 23 drives the contraction component 22, and the contraction component 22 controls the contraction of a plurality of clamping blocks 211. The clamping blocks 211 move radially along the support cylinder 11 under the control of the contraction component 22 until the main rod of the clamping block 211 abuts against the workpiece, and the folding rod of the clamping block 211 restricts the movement of the workpiece. Then, the fitting manipulator 3 moves the spring and the piston rod to the support cylinder 11 and performs the fitting action. During this process, due to the fixing effect of the clamping block 211, the valve body is prevented from being misaligned and skewed during the fitting process.

[0022] Refer to Figure 1 and Figure 3 : A control mechanism 4 is provided on the frame 1. The control mechanism 4 includes an induction component 41, a limiting component 42 and a control component 43; the induction component 41 is used to sense whether the clamping block 211 is in abutting cooperation with the valve body; the limiting component 42 is used to limit the movement of the fitting manipulator 3 towards the support cylinder 11; the control component 43 is used to release the movement restriction of the limiting component 42 on the fitting manipulator 3.

[0023] The present invention realizes the function of automatically judging the fixing condition of the valve body through the sensing component 41, the limiting component 42 and the control component 43, and automatically performs an assembly action after fixing the valve body through the cooperation of the fitting manipulator 3, achieving the effect of automatic assembly and avoiding the situation that parts are damaged due to mutual extrusion during the assembly action when the valve body is not properly installed. When the sensing component 41 senses that the clamping block 211 abuts against the valve body, the control component 43 releases the movement restriction of the fitting manipulator 3 by the limiting component 42. In the working state, when the clamping block 211 does not abut against the valve body, the limiting component 42 restricts the movement of the fitting manipulator 3 to prevent the fitting manipulator 3 from performing the assembly operation in advance. When the operator places the valve body on the support cylinder 11, the driving component 23 drives the contraction component 22, the contraction component 22 controls the movement of the clamping block 211, and the valve body is fixed to the support cylinder 11 by the clamping block 211. At this time, the sensing component 41 senses that the clamping block 211 has abutted against the valve body, and then the control component 43 releases the movement restriction of the fitting manipulator 3 by the limiting component 42, and then the fitting manipulator 3 moves the parts and performs the assembly operation.

[0024] Refer to Figure 2 and Figure 4 : The contraction component 22 includes a base 221, a first elastic member 222 and a second elastic member 223; the base 221 is arranged on the frame 1, and the first mounting seat 21 is movably arranged on the base 221; both ends of the first elastic member 222 are respectively connected to the first mounting seat 21 and the clamping block 211, and both ends of the second elastic member 223 are respectively connected to the base 221 and the first mounting seat 21, the first elastic member 222 is horizontally arranged, and the second elastic member 223 is vertically arranged.

[0025] The present invention realizes the function that the clamping block 211 can move in the vertical direction and the horizontal direction during contraction through the base 221, the first elastic member 222 and the second elastic member 223, and then can achieve the effect that the clamping block 211 can fix valve bodies of different sizes. A support rod extending downward is provided at the bottom of the first mounting seat 21, and the support rod is slidably matched with the base 221. The lifting of the first mounting seat 21 is guided by the support rod and the second elastic member 223 to ensure that the first mounting seat 21 moves up and down in the vertical direction. During fixing, the driving component 23 controls the clamping block 211 to move in the vertical direction and the horizontal direction, so that even if the thickness and diameter of the valve body are different, the folding plate position of the clamping block 211 can stably cooperate with the valve body. When the driving component 23 is started, it drives the clamping block 211 to move downward, and moves radially along the support cylinder 11 during the downward movement, the first elastic member 222 elongates, and the second elastic member 223 contracts. Then, the valve body is clamped through the cooperation of a plurality of clamping blocks 211.

[0026] Refer to Figure 2 , Figure 5 and Figure 6: The driving assembly 23 includes a first linear driver 231, a pressing ring 232, a first guide rod 233 and a third elastic member 234; the first linear driver 231 is disposed on the frame 1, and a mounting block 2311 is connected to the driving end of the first linear driver 231; the first guide rod 233 is connected to the pressing ring 232, and a limiting block 2331 is provided on the first guide rod 233; both ends of the third elastic member 234 are respectively connected to the pressing ring 232 and the mounting block 2311; a roller is rotatably disposed on the pressing ring 232, and the roller is in rolling cooperation with the inclined plate on the clamping block 211.

[0027] The present invention realizes the function of driving the clamping block 211 to move through the first linear driver 231, the pressing ring 232, the first guide rod 233 and the third elastic member 234. An inclined plate is provided on the clamping block 211, a roller is rotatably disposed on the pressing ring 232, and a plurality of rollers are provided. The plurality of rollers are respectively in rolling cooperation with the inclined plates on the plurality of clamping blocks 211. After the operator places the valve body on the support cylinder 11, the first linear driver 231 is used to drive the mounting block 2311 to move downward, and the mounting block 2311 pushes the pressing ring 232 to move downward through the third elastic member 234. The rollers on the pressing ring 232 roll along the inclined plates on the clamping blocks 211 and push the plurality of clamping blocks 211 to move synchronously. After the clamping blocks 211 abut against the valve body, the third elastic member 234 contracts under the extrusion action. When the elastic force of the third elastic member 234 reaches a specified value, the fixing of the valve body is completed. Through the setting of the third elastic member 234, it can function as a buffer component to avoid the situation that the valve body is deformed or misaligned due to uneven force. Then, the pump head is assembled by the fitting manipulator 3. After the assembly work is completed, the first linear driver 231 drives the mounting block 2311 to move upward, and the clamping blocks 211 are reset under the elastic force of the first elastic member 222 and the second elastic member 223.

[0028] Refer to Figure 3 、 Figure 7 and Figure 8 : The sensing assembly 41 includes a hinge seat 411, a first connecting rod 412 and a second connecting rod 413; the hinge seat 411 is disposed on the mounting block 2311; the first connecting rod 412 is hinged to the hinge seat 411, and both ends of the second connecting rod 413 are respectively hinged to the limiting block 2331 and the first connecting rod 412; and the second connecting rod 413 is in transmission connection with the control assembly 43.

[0029] The present invention realizes the function of whether the induction clamp block 211 abuts against the valve body through the hinge seat 411, the first connecting rod 412 and the second connecting rod 413. The limiting block 2331 is arranged at one end of the first guide rod 233 away from the pressing ring 232. In the working state, when the clamp block 211 contacts the valve body under the control of the driving component 23 and the contraction component 22, the first linear driver 231 continues to control the pressing ring 232 to move downward, the third elastic member 234 contracts under pressure, the first guide rod 233 slides relative to the mounting block 2311, thereby pushing the second connecting rod 413 to move, and the second connecting rod 413 pushes the first connecting rod 412 to rotate, and the first connecting rod 412 supports and guides the second connecting rod 413. And during this process, the second connecting rod 413 drives the control component 43, and the control component 43 releases the movement restriction of the restriction component 42 on the fitting manipulator 3. Then, the fitting work of the pump head is carried out through the fitting manipulator 3.

[0030] Refer to Figure 3 and Figure 7 : The restriction component 42 includes a second mounting seat 421, a movable rod 422, a stop block 423 and a fourth elastic member 424; the second mounting seat 421 is arranged on the frame 1, and the movable rod 422 is slidably mounted on the second mounting seat 421; the stop block 423 is connected to the movable rod 422, and both ends of the fourth elastic member 424 are respectively connected to the movable rod 422 and the second mounting seat 421.

[0031] The present invention realizes the function of limiting the movement of the chimeric manipulator 3 through the second mounting seat 421, the movable rod 422, the block 423 and the fourth elastic member 424. The second mounting seat 421, the movable rod 422 and the block 423 are each provided with three, and the three second mounting seats 421 are distributed in a circular array about the axis of the support cylinder 11. Optionally, a contact sensor is provided on one of the blocks 423, and a flexible buffer pad is provided on each block 423. If an erroneous operation occurs, the assembly part is directly misaligned with the valve body, which will cause the parts and the valve body to be damaged under the extrusion. For this reason, the block 423 is provided to contact the parts instead of the valve body. When the clamping block 211 does not clamp the valve body, the movable rod 422 is in an extended state, and at this time, the three blocks 423 abut and cooperate to prevent the chimeric manipulator 3 from moving downward. A fixed block is provided at the end of the movable rod 422, and the second fixed shaft 4222 is provided on the fixed block. When the clamping block 211 completes the clamping action and the third elastic member 234 contracts to the specified range, the first connecting rod 412 and the second connecting rod 413 are pushed to rotate by the movement of the limit block 2331 on the first guide rod 233 relative to the mounting block 2311. When the second connecting rod 413 rotates, the control assembly 43 is driven, and the control assembly 43 no longer restricts the movement of the movable rod 422. The movable rod 422 moves under the elastic force of the fourth elastic member 424, so that the multiple movable rods 422 contract, and the movable rod 422 drives the stopper 423 to move, so that the stopper 423 moves along the radial direction of the support tube 11 in the direction away from the axis of the support tube 11, and the downward movement restriction of the embedded manipulator 3 is released. Then, the pump head is assembled by the embedded manipulator 3. If an erroneous operation occurs, when the embedded robot 3 clamps the part and moves it to the stopper 423, the contact sensor on the stopper 423 senses the pressure and feeds back a signal to the controller, which then sends a signal to the embedded robot 3 to control the embedded robot 3 to reset. The flexible buffer pad on the stopper 423 is used to protect the part and prevent it from being damaged by collision.

[0032] Reference Figure 3 and Figure 9 : The control component 43 includes a clamping rod 431 and a push rod 432; the clamping rod 431 and the push rod 432 are both slidably mounted on the second mounting seat 421, the second mounting seat 421 is provided with a nitrogen spring, the clamping rod 431 is connected to the piston rod of the nitrogen spring, and the second connecting rod 413 is transmission-connected to the push rod 432; the movable rod 422 is provided with a clamping groove 4221 that cooperates with the clamping rod 431.

[0033] The present invention realizes the function of restricting the movement of the movable rod 422 through the clamping rod 431 and the push rod 432. When the clamping block 211 abuts against the workpiece, the first guide rod 233 moves upward relative to the mounting block 2311, thereby pushing the first connecting rod 412 and the second connecting rod 413 to rotate. When the second connecting rod 413 rotates, it drives the push rod 432 to move away from the clamping rod 431. When the push rod 432 separates from the clamping rod 431, the clamping rod 431 is no longer restricted by the extrusion of the push rod 432. Under the elastic force of the nitrogen spring, the clamping rod 431 is pushed out of the card slot 4221. After the clamping rod 431 separates from the card slot 4221, the movable rod 422 moves under the elastic force of the fourth elastic member 424, and multiple movable rods 422 contract. The movable rod 422 drives the stopper 423 to move, so that the stopper 423 moves radially along the support cylinder 11 away from the axis of the support cylinder 11, releasing the restriction on the downward movement of the fitting manipulator 3.

[0034] Refer to Figure 7 , Figure 8 and Figure 10 : A first guide rail 4321 is connected to the push rod 432; a first fixed shaft 4131 is provided on the second connecting rod 413, and the first fixed shaft 4131 is slidably matched with the first guide rail 4321.

[0035] The present invention realizes the function of controlling the movement of the push rod 432 through the rotation of the second connecting rod 413 by means of the first guide rail 4321 and the first fixed shaft 4131. A second guide rail 12 is provided on the frame 1, and a first movable block 4322 and a second movable block 121 are slidably arranged on the first guide rail 4321 and the second guide rail 12 respectively. A third guide rod 4323 and a fifth elastic member 4324 are provided on the first movable block 4322, and the third guide rod 4323 is slidably engaged with the second movable block 121. Two ends of the fifth elastic member 4324 are respectively connected to the first movable block 4322 and the second movable block 121. Two convex shafts are provided on both sides of the second movable block 121, and the second movable block 121 is always in a vertical state through the sliding fit of the two convex shafts with the second guide rail 12. The first movable block 4322 is slidably engaged with the second movable block 121 through the third guide rod 4323, and thus the first movable block 4322 is supported by the third guide rod 4323. When the clamping block 211 is not in contact with the valve body, the first movable block 4322 and the second movable block 121 are in a state of approaching each other under the elastic force of the fourth elastic member 424. And the pressure ring 232 is away from the mounting block 2311 under the elastic force of the third elastic member 234, so that the limiting block 2331 is in contact with the mounting block 2311, and the limiting block 2331 drives the first connecting rod 412 and the second connecting rod 413 to rotate, and then pulls the first guide rail 4321 through the second connecting rod 413, further stabilizing the states of the first movable block 4322 and the second movable block 121. When the pressure ring 232 is in contact with the clamping block 211, the third elastic member 234 contracts under the pressure, the first guide rod 233 and the limiting block 2331 move upward relative to the mounting block 2311, and then push the first connecting rod 412 and the second connecting rod 413 to rotate. The second connecting rod 413 pushes the first guide rail 4321 to move through the first fixed shaft 4131, and then drives the push rod 432 to move through the first guide rail 4321, so that the push rod 432 is separated from the clamping rod 431.

[0036] Refer to Figure 7 : A second fixed shaft 4222 is provided on the movable rod 422; a second linear driver 425 is provided on the second mounting seat 421, and a push block 4251 for pushing the second fixed shaft 4222 is provided on the driving end of the second linear driver 425.

[0037] The present invention realizes the function of pushing the movable rod 422 to reset through the second fixed shaft 4222, the second linear driver 425 and the push block 4251. After completing the assembly work, the mounting block 2311 and the pressure ring 232 are reset by controlling the first linear driver 231. The clamping block 211 is reset under the elastic forces of the first elastic member 222 and the second elastic member 223. Then, the workpiece is removed by the fitting manipulator 3. At this time, the push rod 432 has a tendency to reset under the elastic forces of the third elastic member 234 and the fifth elastic member 4324. The push rod 432 applies pressure to the clamping rod 431. Then, the second linear driver 425 drives the push block 4251 to contract. After the push block 4251 contacts the second fixed shaft 4222, it pushes the second fixed shaft 4222 and the movable rod 422 to move. When the clamping rod 431 is aligned with the card slot 4221 on the movable rod 422, the clamping rod 431 is snapped into the card slot 4221, and the push rod 432 is reset under the elastic forces of the third elastic member 234 and the fifth elastic member 4324. At this time, the push rod 432 abuts against the clamping rod 431.

[0038] Refer to Figures 1 - 4 : An automatic positioning and fitting method for pump head assembly to improve assembly consistency, comprising the following steps: S1. Place the valve body on the support cylinder 11; S2. Start the driving assembly 23. The driving assembly 23 controls the clamping block 211 to contract through the contraction assembly 22, and the clamping block 211 fixes the valve body to the support cylinder 11; S3. Start the fitting manipulator 3 to perform the assembly work; S4. After completing the assembly work, the fitting manipulator 3 removes the workpiece.

[0039] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An automatic positioning and fitting device for pump head assembly to improve assembly consistency, characterized in that: The invention comprises a frame (1), a fixing mechanism (2) and an embedded manipulator (3); the frame (1) is provided with a support tube (11); the fixing mechanism (2) comprises a first mounting seat (21), a contraction assembly (22) and a first linear drive (231); at least two first mounting seats (21) are provided, the first mounting seats (21) are arranged on the frame (1), and each first mounting seat (21) is movably provided with a clamping block (211); the contraction assembly (22) is used to control the radial movement of the first mounting seat (21) along the support tube (11), and the drive assembly (23) is used to drive the contraction assembly (22); the embedded manipulator (3) is used to move the part to the support tube (11).

2. The automatic positioning and fitting device for pump head assembly for improving assembly consistency according to claim 1, characterized in that: A control mechanism (4) is provided on the frame (1), and the control mechanism (4) comprises a sensing component (41), a limiting component (42) and a control component (43); the sensing component (41) is used to sense whether the clamping block (211) is in abutment with the valve body; the limiting component (42) is used to limit the movement of the embedded manipulator (3) toward the support cylinder (11); and the control component (43) is used to release the movement restriction of the embedded manipulator (3) by the limiting component (42).

3. The automatic positioning and fitting device for pump head assembly for improving assembly consistency according to claim 1, characterized in that: The contraction component (22) comprises a base (221), a first elastic member (222) and a second elastic member (223); the base (221) is arranged on the frame (1), and the first mounting seat (21) is movably arranged on the base (221); two ends of the first elastic member (222) are respectively connected to the first mounting seat (21) and the clamping block (211), and two ends of the second elastic member (223) are respectively connected to the base (221) and the first mounting seat (21); the first elastic member (222) is arranged horizontally, and the second elastic member (223) is arranged vertically.

4. The automatic positioning and fitting device for pump head assembly for improving assembly consistency according to claim 2, characterized in that: The driving assembly (23) comprises a first linear driver (231), a pressure ring (232), a first guide rod (233) and a third elastic member (234); the first linear driver (231) is arranged on the frame (1), and the driving end of the first linear driver (231) is connected to a mounting block (2311); the first guide rod (233) is connected to the pressure ring (232), and a limit block (2331) is provided on the first guide rod (233); two ends of the third elastic member (234) are respectively connected to the pressure ring (232) and the mounting block (2311); a roller is rotatably arranged on the pressure ring (232), and the roller is in rolling cooperation with the inclined plate on the clamping block (211).

5. The automatic positioning and fitting device for pump head assembly for improving assembly consistency according to claim 4, characterized in that: The sensing component (41) comprises an articulated seat (411), a first connecting rod (412) and a second connecting rod (413); the articulated seat (411) is arranged on a mounting block (2311); the first connecting rod (412) is articulated on the articulated seat (411), and two ends of the second connecting rod (413) are respectively articulated to the limit block (2331) and the first connecting rod (412); and the second connecting rod (413) is in transmission connection with the control component (43).

6. The automatic positioning and fitting device for pump head assembly for improving assembly consistency according to claim 5, characterized in that: The limiting assembly (42) comprises a second mounting seat (421), a movable rod (422), a stopper (423) and a fourth elastic member (424); the second mounting seat (421) is arranged on the frame (1), and the movable rod (422) is slidably mounted on the second mounting seat (421); the stopper (423) is connected to the movable rod (422), and two ends of the fourth elastic member (424) are respectively connected to the movable rod (422) and the second mounting seat (421).

7. The automatic positioning and fitting device for pump head assembly for improving assembly consistency according to claim 6, characterized in that: The control assembly (43) comprises a clamping rod (431) and a push rod (432); the clamping rod (431) and the push rod (432) are both slidably mounted on a second mounting seat (421); a nitrogen spring is provided on the second mounting seat (421); the clamping rod (431) is connected to a piston rod of the nitrogen spring; the second connecting rod (413) is transmission-connected to the push rod (432); and a clamping groove (4221) that cooperates with the clamping rod (431) is provided on the movable rod (422).

8. The automatic positioning and fitting device for pump head assembly for improving assembly consistency according to claim 7, characterized in that: The push rod (432) is connected to a first guide rail (4321); the second connecting rod (413) is provided with a first fixed shaft (4131), and the first fixed shaft (4131) is slidably matched with the first guide rail (4321).

9. The automatic positioning and fitting device for pump head assembly for improving assembly consistency according to claim 6, characterized in that: A second fixed shaft (4222) is provided on the movable rod (422); a second linear driver (425) is provided on the second mounting seat (421); and a push block (4251) for pushing the second fixed shaft (4222) is provided on the driving end of the second linear driver (425).

10. An automatic positioning and fitting method for assembling a pump head to improve assembly consistency, using an automatic positioning and fitting device for assembling a pump head to improve assembly consistency as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Place the valve body on the support cylinder (11); S2, starting the driving assembly (23), the driving assembly (23) controls the clamping block (211) to contract through the contraction assembly (22), and the clamping block (211) fixes the valve body to the support cylinder (11); S3, start the embedded robot (3) to perform assembly work; S4. After the assembly work is completed, the robot (3) is engaged to remove the workpiece.

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