Built-in coil spring phase shifter assembly assembling device

Abstract

The invention provides a built-in coil spring phase shifter assembly assembling device which comprises a bottom plate and a workbench, the bottom face of the middle of the workbench is connected with a rotating air cylinder, the top face of the workbench is sequentially provided with a first annular step, a second annular step and a center hole from outside to inside, the first annular step, the second annular step and the center hole are concentrically arranged, and a chain wheel is arranged in the first annular step. A rotor positioning block is connected in the second annular step, the rotor positioning block is clamped and positioned with a positioning pin on the rotor, a cylinder rod of the rotating cylinder extends out of the center hole, the top end of the cylinder rod is connected with a rotating shaft, and the rotating shaft penetrates through the rotor positioning block, the chain wheel, the rotor and the cover plate and then is directionally connected into the cover plate clamping piece; a timing point clamping assembly, a chain wheel jacking air cylinder and a stator jacking air cylinder are arranged on the workbench. The top face of the cover plate extends upwards to form an annular boss, and a cover plate notch allowing the end of the coil spring to be placed in is formed in the annular boss. A jacking air cylinder control switch and a rotating air cylinder control switch are arranged on the bottom plate. The built-in coil spring phase shifter assembly can be quickly and efficiently assembled.

Description

Technical Field

[0001] This invention relates to the field of phase shifter technology, and in particular to an assembly device for a built-in coiled spring phase shifter assembly. Background Technology

[0002] The phase shifter is an important component of the variable valve timing system in an automotive engine. By controlling the rotation of the rotor inside the phase shifter, it advances or delays the valve opening angle, thereby regulating the air volume to reduce fuel consumption and increase power. To ensure the phase shifter performs properly, the rotor rotation angle in the phase shifter assembly must be within the design range during assembly to ensure that the valves open at the specified time, achieving energy saving and emission reduction.

[0003] The structure of the built-in spring phase shifter is as follows Figures 1 to 4 As shown, the assembly includes a stator (a), a rotor (b), a locking pin assembly (c), a sprocket (d), a cover plate (e), a coil spring (f), and a locating pin (g). Due to the large number of parts and the existence of assembly gaps, it is difficult to control the gap requirements of each component during the assembly process. Summary of the Invention

[0004] To address the aforementioned issues, this invention aims to provide an assembly device for a built-in spring phase shifter assembly, which can quickly and efficiently assemble the built-in spring phase shifter assembly and is applicable to various phase shifter products.

[0005] The technical solution of this invention is an assembly device for a built-in coiled spring phase shifter assembly, including a built-in coiled spring phase shifter. The built-in coiled spring phase shifter includes a stator, rotor, locking pin assembly, sprocket, cover plate, coiled spring, positioning pin, and bolts. Its features include a base plate and a worktable. The worktable is connected to the base plate via a bracket. A rotary cylinder is connected to the bottom surface of the center of the worktable. The top surface of the worktable has concentrically arranged first annular steps, second annular steps, and a central hole arranged sequentially from the outside to the inside. The sprocket of the phase shifter is disposed within the first annular step, and the second annular step... The system includes a rotor positioning block that engages with a positioning pin on the rotor. The cylinder rod of the rotary cylinder extends from the central hole, and the top of the cylinder rod is connected to a rotating shaft. The rotating shaft passes through the rotor positioning block, sprocket, rotor, and cover plate before being oriented to the cover plate clamp. The worktable is equipped with a timing clamping assembly, a sprocket clamping cylinder, and a stator clamping cylinder. An annular boss extends upward from the top surface of the cover plate, and a cover plate slot is provided at the annular boss for inserting the end of a coil spring. A clamping cylinder control switch and a rotary cylinder control switch are provided on the base plate.

[0006] Preferably, the timing clamping assembly includes a guide mounting block and a guide rod clamping claw. The front end of the guide rod clamping claw is provided with clamping teeth, and one of the chain teeth of the sprocket is provided with a timing tooth mark. The clamping teeth of the guide rod clamping claw engage with the timing tooth for positioning. The bottom of the front end of the guide rod clamping claw is provided with a positioning step, the height of which is adapted to the height of the chain tooth portion of the sprocket. After the guide rod clamping claw is pushed into the engaging chain tooth, it limits the sprocket in both the circumferential and height directions.

[0007] Preferably, the cylinder rod at the front end of the sprocket clamping cylinder extends and clamps clockwise onto the sprocket teeth.

[0008] Preferably, a slot is vertically provided on the side of the stator away from the sprocket clamping cylinder, and the cylinder rod at the front end of the stator clamping cylinder extends out and clamps counterclockwise into the slot of the stator.

[0009] Preferably, the cover plate clamp includes a pressure block, a connecting block, and a pressure strip. The top surface of the connecting block is provided with a pressure strip mounting groove in the horizontal direction. The pressure strip is installed in the pressure strip mounting groove. An insertion hole is axially opened at the center of the connecting block. The top end of the rotating shaft is inserted into the insertion hole and limited in the circumferential direction. The pressure block and the connecting block are connected as a whole by screws. Both ends of the pressure strip are pressed against the top surface of the coil spring and located in the annular boss on the top surface of the cover plate.

[0010] Preferably, the cover plate is provided with multiple bolts at equal angles along the circumference, the stator is provided with corresponding through holes for the bolts to pass through, the sprocket is provided with threaded connection holes, and the bolts are threaded onto the sprocket after passing through the cover plate and the stator.

[0011] Preferably, the bottom surface of the rotating shaft is provided with a connecting hole, and a keyway is provided in the connecting hole. The top end of the cylinder rod is inserted into the connecting hole of the rotating shaft and positioned by connecting with a key.

[0012] Preferably, the top surface of the rotor positioning block is provided with a positioning pin slot that engages with the positioning pin of the rotor.

[0013] This invention enables rapid and efficient assembly of built-in coiled spring phase shifter assemblies and is applicable to a variety of phase shifter products. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the phase shifter in this invention; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 This is an exploded view of the phase shifter in this invention; Figure 4 for Figure 3 A structural diagram from another perspective; Figure 5This is a schematic diagram of the structure of the present invention; Figure 6 This is a top view of the first stage of the present invention; Figure 7 This is a top view of the second stage of the present invention; Figure 8 This is a top view of the third stage of the present invention; Figure 9 This is an exploded view of the present invention; Figure 10 for Figure 9 A structural diagram from another perspective; Figure 11 This is a schematic diagram of the cover plate assembly and the rotating shaft in this invention; Figure 12 This is a schematic diagram of the rotor, cover plate, coil spring, and positioning pin in this invention; Figure 13 for Figure 12 A structural diagram from another perspective; Wherein: a—stator; a1—slot; b—rotor; c—locking pin assembly; d—sprocket; e—cover plate; e1—annular boss; e11—cover plate slot; f—coil spring; g—locating pin; h—bolt; 1—base plate; 2—worktable; 21—first annular step; 22—second annular step; 23—center hole; 3—bracket; 4—rotary cylinder; 41—cylinder rod; 5—rotor locating block; 51—locating pin slot; 6—rotary shaft; 61—Connecting hole; 611—Keyway; 8—Cover plate clip; 81—Pressure block; 82—Connecting block; 821—Pressure strip mounting groove; 822—Insertion hole; 83—Pressure strip; 9—Timing point clamping assembly; 91—Guide mounting block; 92—Guide rod clamping claw; 921—Clamping tooth; 922—Positioning step; 10—Sprocket clamping cylinder; 11—Stator clamping cylinder; 12—Clamping cylinder control switch; 13—Rotary cylinder control switch; 14—Key. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] like Figures 1 to 13As shown, the present invention provides an assembly device for a built-in coiled spring phase shifter assembly, including a built-in coiled spring phase shifter. The built-in coiled spring phase shifter includes a stator a, a rotor b, a locking pin assembly c, a sprocket d, a cover plate e, a coiled spring f, a positioning pin g, and a bolt h. The device is characterized by including a base plate 1 and a worktable 2. The worktable 2 is connected to the base plate 1 via a bracket 3. A rotary cylinder 4 is connected to the bottom surface of the middle part of the worktable 2. The top surface of the worktable 2 has a first annular step 21, a second annular step 22, and a central hole 23 arranged concentrically from the outside to the inside. The sprocket d of the phase shifter is disposed within the first annular step 21, and the rotor stator is connected within the second annular step 22. Positioning block 5, rotor positioning block 5 is engaged with positioning pin g on rotor b for positioning, cylinder rod 41 of rotary cylinder 4 extends from center hole 23, top end of cylinder rod 41 is connected to rotating shaft 6, rotating shaft 6 passes through rotor positioning block 5, sprocket d, rotor b, cover plate e and is oriented to cover plate clamp 8; the worktable 2 is provided with timing clamping assembly 9, sprocket clamping cylinder 10, stator clamping cylinder 11; the top surface of cover plate e extends upward to form an annular boss e1, and the annular boss e1 is provided with a cover plate slot e11 for inserting the end of coil spring f; the base plate 1 is provided with clamping cylinder control switch 12 and rotary cylinder control switch 13.

[0017] Based on the above solutions, such as Figure 5 As shown, the timing clamping assembly 9 includes a guide mounting block 91 and a guide rod clamping claw 92. The front end of the guide rod clamping claw 92 is provided with a clamping tooth 921. One of the chain teeth of the sprocket d is provided with a timing tooth mark. The clamping tooth 921 of the guide rod clamping claw 92 engages with the timing tooth for positioning. The bottom of the front end of the guide rod clamping claw 92 is provided with a positioning step 922. The height of the positioning step 922 is adapted to the height of the chain tooth of the sprocket d. After the guide rod clamping claw 92 is pushed into the engaging chain tooth, it limits the sprocket d in both the circumferential and height directions.

[0018] Specifically, the cylinder rod at the front end of the sprocket clamping cylinder 10 extends and presses clockwise against the chain teeth of the sprocket d, clamping the sprocket d in a clockwise direction, so that the locking pin assembly c is inserted into the locking pin hole on the sprocket d and makes zero-gap contact.

[0019] Specifically, a slot a1 is vertically provided on the side of the stator a away from the sprocket clamping cylinder 10. The cylinder rod at the front end of the stator clamping cylinder 11 extends out and clamps counterclockwise into the slot a1 of the stator a, so that the stator a and the rotor b make zero-gap contact at the limiting edge.

[0020] Specifically, such as Figure 11As shown, the cover plate clip 8 includes a pressure block 81, a connecting block 82, and a pressure strip 83. The top surface of the connecting block 82 is provided with a pressure strip mounting groove 821, and the pressure strip 83 is installed in the pressure strip mounting groove 821. The center of the connecting block 82 is provided with an axial insertion hole 822. The top end of the rotating shaft 6 is inserted into the insertion hole 822 and limited in the circumferential direction. The pressure block 81 and the connecting block 82 are connected as a whole by screws. The end of the pressure strip 83 presses against the top surface of the end of the coil spring f and is located in the cover plate groove e11 on the top surface of the cover plate e.

[0021] Specifically, the cover plate e has multiple bolts h at equal angles along the circumference, the stator a has corresponding through holes for the bolts h to pass through, the sprocket d has threaded connection holes, and the bolts h pass through the cover plate e and the stator a and are threaded onto the sprocket d.

[0022] Specifically, such as Figure 9 and Figure 10 As shown, the bottom surface of the rotating shaft 6 is provided with a connecting hole 61, and a keyway 611 is provided in the connecting hole 61. The top end of the cylinder rod 41 is inserted into the connecting hole 61 of the rotating shaft 6 and is connected and positioned by a key 14.

[0023] Specifically, such as Figure 9 As shown, the top surface of the rotor positioning block 5 is provided with a positioning pin slot 51 that engages with the positioning pin g of the rotor b for positioning.

[0024] The working principle of this invention is as follows: like Figure 6 As shown, in the first stage, the stator a, rotor b, locking pin assembly c, and sprocket d are assembled. These four components are assembled into a single assembly with gaps between them. This assembly is placed inside the first annular step 21. During placement, ensure that one of the timing tooth markings on the sprocket d is aligned with the clamping tooth 921 of the guide rod clamping claw 92. Push the guide rod clamping claw 92 inward so that the clamping tooth 921 engages with the timing tooth for positioning. At the same time, the height of the positioning step 922 is adapted to the height of the chain tooth of the sprocket d for pressing (the height of the chain tooth of the sprocket d is different for different models of phase shifters, and the corresponding height of the positioning step 922 is also different). During this process, the positioning pin g on the rotor b is engaged in the positioning pin slot 51 of the rotor positioning block 5, so that the rotor is positioned and fixed.

[0025] Next, control switch 12 of the clamping cylinder is activated, and the push rod of the sprocket clamping cylinder 10 extends and clamps the sprocket d clockwise. The purpose of this is to insert the locking pin assembly c into the locking pin hole on the sprocket d and make zero-gap contact. The push rod of the stator clamping cylinder 11 extends and clamps the stator a counterclockwise. The purpose of this is to make the stator a and the limiting edge of the rotor b make zero-gap contact.

[0026] like Figure 7As shown, in the second stage, the cover plate e and the coil spring f are placed next. One end of the coil spring f is inserted into the cover plate groove e11 of the cover plate e. The insertion hole 822 of the connecting block 82 at the bottom of the cover plate clip 8 is aligned with the rotating shaft 6, so that the top end of the rotating shaft 6 is inserted into the insertion hole 822 and limited in the circumferential direction. At the same time, the pressure strip 83 of the cover plate clip 8 is inserted into the cover plate groove e11 where the end of the coil spring f is located.

[0027] As shown in the figure, in the third stage, the rotary cylinder control switch 13 is controlled, and the rotary cylinder 4 drives the rotary shaft 6 to rotate by an angle, which in turn drives the connecting block 82 to rotate. The coil spring f overcomes the spring force and rotates by an angle, so that the cover plate e rotates by an angle in sync. This ensures that the bolt holes on the cover plate e are aligned with the through hole of the stator a and the threaded connection hole of the sprocket d below. A series of bolts h are then tightened to complete the assembly of the built-in coil spring phase shifter assembly.

[0028] Next, control switch 12 of the clamping cylinder to retract and reset the sprocket clamping cylinder 10 and stator clamping cylinder 11, releasing the clamping torque. Control switch 13 of the rotary cylinder to reverse the rotation and reset the rotary cylinder 4, releasing the rotation torque. During the reverse rotation of the rotary cylinder 4, remove the cover plate clip 8, then remove the phase shifter assembly for the assembly of the next product.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An assembly device for an internal coil spring phase shifter assembly, comprising an internal coil spring phase shifter comprising a stator (a), a rotor (b), a locking pin assembly (c), a sprocket (d), a cover plate (e), a coil spring (f), a dowel pin (g), a bolt (h), characterized in that: The utility model relates to a workbench, including bottom plate (1) and workbench (2), workbench (2) is connected to bottom plate (1) through support (3), the bottom surface of workbench (2) middle part is connected with rotary cylinder (4), the top surface of workbench (2) is sequentially provided with concentric arrangement's first annular step (21), second annular step (22) and center hole (23) from outside to inside, the chain wheel (d) of phase shifter is arranged in first annular step (21), the second annular step (22) is connected with rotor positioning block (5), rotor positioning block (5) is connected with the positioning pin (g) on rotor (b) and is clamped and positioned, the cylinder rod (41) of rotary cylinder (4) is stretched out from center hole (23), the top end of cylinder rod (41) is connected rotary shaft (6), rotary shaft (6) passes through rotor positioning block (5), chain wheel (d), rotor (b), cover plate (e) and is connected to cover plate clamping piece (8) after directional connection, workbench (2) is provided with positive time point clamping assembly (9), chain wheel top tight cylinder (10), stator top tight cylinder (11), the top surface of cover plate (e) extends the annular boss (e1) upwards, the annular boss (e1) is provided with the cover plate notch (e11) of the end head of spring (f) and is put into, bottom plate (1) is provided with top tight cylinder control switch (12) and rotary cylinder control switch (13).

2. An assembly device for an inbuilt coil spring phase shifter assembly as claimed in claim 1, wherein: The positive time point clamping assembly (9) includes a guide mounting block (91) and a guide rod clamping pawl (92), the guide rod clamping pawl (92) is provided with a clamping tooth (921) at the front end, one of the sprocket teeth (d) is provided with a timing tooth mark, the clamping tooth (921) of the guide rod clamping pawl (92) is engaged and positioned with the timing tooth, the guide rod clamping pawl (92) is provided with a positioning step (922) at the front end, the height of the positioning step (922) is matched with the height of the sprocket tooth (d), and the guide rod clamping pawl (92) is pushed into the sprocket tooth to limit the sprocket (d) in the circumferential direction and the height direction.

3. An assembly device for an internal coil spring phase shifter assembly as defined in claim 1, wherein: The cylinder rod of the chain wheel top tight cylinder (10) is stretched out clockwise and is tightly pressed on the sprocket tooth of the sprocket (d).

4. An assembly device for an internal coil spring phase shifter assembly as defined in claim 3, wherein: The stator (a) is provided with a clamping groove (a1) vertically on the side away from the chain wheel top tight cylinder (10), and the cylinder rod of the stator top tight cylinder (11) is stretched out counterclockwise and is tightly pressed in the clamping groove (a1) of the stator (a).

5. An assembly device for an internal coil spring phase shifter assembly as defined in claim 1, wherein: The cover plate clamping piece (8) includes a pressing block (81), a connecting block (82) and a pressing strip (83), the top surface of the connecting block (82) is transversely provided with a pressing strip mounting groove (821), the pressing strip (83) is mounted in the pressing strip mounting groove (821), an insertion hole (822) is axially formed in the center of the connecting block (82), the top end of the rotating shaft (6) is inserted into the insertion hole (822) and is limited in the circumferential direction, the pressing block (81) and the connecting block (82) are integrated by screws, and the end of the pressing strip (83) is pressed on the top surface of the end of the coil spring (f) and is located in the cover plate notch (e11) on the top surface of the cover plate (e).

6. An assembly device for an internal coil spring phase shifter assembly as defined in claim 1, wherein: A plurality of bolts (h) are arranged on the cover plate (e) at equal angles in the circumferential direction, and the stator (a) is correspondingly provided with through holes for the bolts (h) to pass through, and the sprocket (d) is provided with threaded connection holes, and the bolts (h) are threadedly connected to the sprocket (d) after passing through the cover plate (e) and the stator (a).

7. An assembly device for an internal coil spring phase shifter assembly as defined in claim 1, wherein: The bottom surface of the rotating shaft (6) is provided with a connecting hole (61), the connecting hole (61) is provided with a key groove (611), the top end of the cylinder rod (41) is inserted into the connecting hole (61) of the rotating shaft (6) and is connected and positioned by the key (14).

8. An assembly device for an internal coil spring phase shifter assembly as defined in claim 1, wherein: The top surface of the rotor positioning block (5) is provided with a positioning pin clamping groove (51) for clamping and positioning the positioning pin (g) of the rotor (b).

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