Tension spring electrophoresis hanger and tension spring loading and unloading equipment

Abstract

The invention discloses a tension spring electrophoresis hanger and tension spring loading and unloading equipment, relates to the technical field of tension spring electrophoresis coating, and solves the problem that an electrophoresis layer between parallel straining rings on a tension spring is non-uniform in adsorption due to the fact that a conventional hanger cannot keep the tension spring in a stretching state. A support base and a slide plate; the stretching driving mechanism is in driving connection with the sliding plate to control the sliding plate to be close to or away from the supporting base; the hanging tool comprises two hanging racks and two supporting rods, the two hanging racks are fixed to the supporting base and the sliding plate respectively, each hanging rack is provided with a connecting piece, and the two ends of each hanging rack are provided with limiting grooves; the supporting rod is arranged between the two hanging frames so as to open the two hanging frames. The equipment can stretch the tension spring fixed on the two hangers, the hanger can keep the tension spring in a stretched state, an electrophoresis layer can be uniformly adsorbed on the whole tension spring body during electrophoresis, the electrophoresis appearance of the tension spring is improved, and friction of the tension spring in a working state is eliminated in different directions.

Description

Technical Field

[0001] The invention relates to the technical field of tension spring electrophoretic coating, in particular to a tension spring electrophoretic hanger and tension spring loading and unloading equipment. Background Art

[0002] In recent years, due to the improvement of the quality standards of the entire domestic automobile industry, the corresponding requirements for the appearance and NVH of automobile tension springs have also gradually increased. Electrophoretic coating is a coating method that uses an external electric field to deposit pigments and resins on the surface of a substrate of one of the electrodes. Electrophoretic coating has the advantages of high coating efficiency, uniform coating thickness, uniform and smooth paint film, and high coating quality, so it is widely used in the coating production of automobile tension springs.

[0003] The conventional electrophoresis process is to place the tension spring in the electrophoresis line through a conventional hanger for electrophoresis. The conventional tension spring hanger is only used to hang the tension spring on the hanger, and then immerse the tension spring in the electrophoresis tank for electrophoresis. Due to the tight characteristics of the tension spring itself, the circles fit closely together, which will cause the electrophoresis layer on the inner side of the tight circle to fail to adsorb, and the electrophoresis layer between the tight circles will be unevenly adsorbed, affecting the appearance of the tension spring and the NVH of the tooling state (no electrophoresis layer protection, friction is not in the same direction). Summary of the invention

[0004] The purpose of the present invention is to solve the above problems. A tension spring loading and unloading device and a hanger thereof are designed to solve the problem that the conventional hanger cannot keep the tension spring in an extended state, resulting in uneven adsorption of the electrophoretic layer between the tightening rings on the tension spring.

[0005] The technical solution of the present invention to achieve the above-mentioned purpose is a tension spring electrophoresis hanger, comprising: Two hanging racks, the two hanging racks are arranged in parallel, each hanging rack has a connecting piece for clamping with the end of the tension spring, and both ends of the hanging racks have limiting grooves; Two support rods, which are arranged between the two hangers to prop the two hangers apart, so that the tension spring suspended between the two hangers is in an extended state, and the two support rods and the two hangers together form a hanger with a frame structure; The two ends of the support rod have an embedding portion for embedding into the limiting groove and a blocking portion for preventing the two hangers from approaching each other under the action of the tension spring, and the blocking portion abuts against the inner side of the hanger.

[0006] Furthermore, a plurality of connecting plates are arranged on opposite sides of the two hangers, and a clamping piece for clamping with the end of the tension spring is provided in the middle of the connecting plate.

[0007] Preferably, the connecting plate is U-shaped, and an escape hole penetrating vertically is provided between the connecting plate and the bracket.

[0008] Furthermore, both ends of the support rod are provided with external threads, and nuts are threadedly connected to the external threads.

[0009] Furthermore, the hanger is provided with a plurality of connecting columns for engaging with the hooks on the tension springs, and the connecting columns are vertically fixed on the top of the hanger.

[0010] Furthermore, the lower side of the limiting groove extends obliquely downward.

[0011] The present invention also provides a tension spring loading and unloading device, comprising the hanger as described above, and further comprising: Countertops; A support base and a slide plate, wherein the support base is fixed to one end of the table panel, the slide plate is horizontally slidably connected to the table panel, and two hangers are respectively fixed to the support base and the slide plate; A stretching drive mechanism, the stretching drive mechanism is connected to the driving of the slide plate to control the slide plate to approach or move away from the support base; Blocks are provided at both ends of the support base and the slide, and the opposite sides of the two blocks on the support base and the slide protrude outward to form a blocking structure. The two ends of the hanger are respectively tightly attached to the inner side of the blocking structure, and a pressure plate for pressing the hanger is provided on the block.

[0012] Furthermore, the stretching drive mechanism includes a servo motor and a screw connected to the output end of the servo motor. A motor fixing seat is provided on the table panel, and the servo motor is fixedly mounted on the motor fixing seat. One end of the screw passes through the support base and is rotatably connected to the screw seat fixed on the table panel, and the bottom of the slide plate is transmission-connected to the screw.

[0013] Furthermore, a V-shaped guide rail is provided on one side of the table panel, and at least two slide seats are slidably connected to the V-shaped guide rail. A sensor fixing seat is vertically fixed on each of the slide seats, and a proximity sensor is provided on the sensor fixing seat to detect the sliding position of the slide plate.

[0014] Furthermore, the support base and the slide plate are both provided with a plurality of avoidance grooves, and the avoidance grooves correspond to the connecting members.

[0015] Compared with the prior art, the beneficial effects are: The hanger in the present invention is composed of two hangers and two support rods. The hangers are provided with connectors for clamping with the ends of the tension springs. The tension springs are located between the two hangers and the two ends of the tension springs are respectively fixed on the two hangers. After the tension springs are stretched to a certain length, the two hangers are spread apart by the support rods so that the tension springs are kept in a stretched state, so that the hanger and the tension springs can be put into the electrophoresis tank together for electrophoresis operation.

[0016] The hanger can be fixedly installed on the tension spring loading and unloading equipment, and the two hangers of the hanger are respectively fixed on the supporting base and the slide plate. The tension spring loading and unloading equipment drives one of the hangers to move by controlling the movement of the slide plate, thereby stretching the tension spring. The equipment can make multiple tension springs side by side and in a stretched state, eliminating the tightening ring on the tension spring. There is a gap between two adjacent circles during electrophoresis of the tension spring, and the electrophoretic layer can be evenly adsorbed on the entire tension spring body, which can eliminate the blind area of ​​the electrophoretic layer on the inner side of the tightening ring of the original process, and can also avoid the problem of uneven adsorption between the tightening rings of the original process, thereby improving the appearance of the tension spring electrophoresis and eliminating the friction anisotropy in the working state of the tension spring, thereby improving the process quality of the tension spring. After the tension spring is electrophoresed, the hanger can be re-fixed to the automatic stretching equipment, and the tension spring can be disassembled, which is convenient, fast, time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the structure when a hanger is placed on the tension spring loading and unloading device in Example 1; Figure 2 yes Figure 1 A structural diagram from another perspective; Figure 3 It is a schematic diagram of the structure of the components installed on the table panel in Example 1; Figure 4 is a schematic diagram of the structure in which the hanger is respectively fixed on the support base and the slide plate in Example 1; Figure 5 is a schematic diagram of the structure of the hanger in Example 1; Figure 6 is a schematic diagram of the structure of the hanger on the hanger in Example 1; Figure 7 is a schematic diagram of the structure of the support rod on the hanger in Example 1; Figure 8 is a schematic diagram of the structure of the hanger in Example 2; Fig. 9 It is a structural schematic diagram of the hanger in Example 3.

[0018] In the figure, 1, bracket; 101, limit groove; 102, connecting plate; 1021, snap-in piece; 103, handle; 104, connecting column; 2, support rod; 201, embedding part; 202, blocking part; 203, external thread; 204, nut; 3, table panel; 4, supporting base; 5, slide plate; 501, avoidance groove; 6, stretching drive mechanism; 61, servo motor; 62, screw rod; 7, table frame; 8, V-shaped guide rail; 9, slide seat; 10, proximity sensor; 11, block; 12, pressure plate; 13, cushion block; 14, screw rod seat; 15, heightening block; 16, slide rail; 17, sensor fixing seat; 18, motor fixing seat; 19, auxiliary block. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1 like Figure 1-Figure 4 As shown, a preferred embodiment of the present invention proposes a tension spring electrophoresis hanger and a tension spring loading and unloading device, the hanger can be fixedly installed on the tension spring loading and unloading device, the hanger has two hangers 1 and two support rods 2, the two ends of the tension spring are respectively clamped and fixed on the two hangers 1, the tension spring fixed between the two hangers 1 can be pulled apart by the tension spring loading and unloading device, so that the tension spring is in an extended state, so that the electrophoresis liquid can enter the inner side of the tension spring during electrophoresis, and the support rod 2 is used to open the two hangers 1.

[0021] The tension spring loading and unloading equipment is mainly composed of a table frame 7, a table panel 3, a support base 4, a slide plate 5, a stretching drive mechanism 6 and other components, wherein the table panel 3 is fixedly installed on the top of the table frame 7 and used as a workbench. A pad 15 is installed on each side of the table panel 3, and a guide rail is fixedly installed on each pad 15. The slide plate 5 is horizontally slidably connected to the guide rail. The pad 15 is used to raise the height of the slide plate 5 so as to leave enough space for the stretching drive mechanism 6 to be connected to the bottom transmission of the slide plate 5.

[0022] The support base 4 is fixed at one end of the table panel 3 and is parallel to the slide plate 5. Two hangers 1 are fixed on the support base 4 and the slide plate 5 respectively, and the two ends of the tension spring are fixed on the two hangers 1 respectively. Then the slide plate 5 is controlled to move by the stretching drive mechanism 6, and the slide plate 5 will drive one of the hangers 1 to move, thereby stretching the tension spring. After the tension spring is stretched to a specified length, two support rods 2 will be placed between the two hangers 1 to open the two hangers 1, so that the tension spring remains in an extended state for subsequent electrophoresis operations.

[0023] like Figure 3 As shown, the stretching drive mechanism 6 mainly includes a servo motor 61 and a screw 62, wherein a motor fixing seat 18 and a screw seat 14 are installed on the table panel 3, the motor fixing seat 18 and the screw seat 14 are respectively located at the two ends of the table panel 3, the servo motor 61 is horizontally fixed on the motor fixing seat 18, the output end of the servo motor 61 is connected to the screw 62 through a coupling, the screw 62 passes through the support base 4 and is rotatably connected to the screw seat 14, the bottom of the slide plate 5 is transmission-connected to the screw 62, the servo motor 61 drives the screw 62 to rotate, thereby driving the slide plate 5 to slide.

[0024] A screw seat 14 is also provided on the inner side of the support base 4, and the two screw seats 14 are fixed on the cushion block 13, and the cushion block 13 is fixed on the table panel 3 by bolts. The cushion block 13 is used to raise the height of the screw rod 62, and the two ends of the screw rod 62 are rotatably connected to the two screw seats 14 respectively.

[0025] refer to Figure 4 A stopper 11 is fixed at both ends of the support base 4 and the two ends of the slide plate 5. The opposite sides of the two stoppers 11 on the support base 4 and the slide plate 5 protrude outward to form a blocking structure. The two ends of the hanger 1 are located on the back of the blocking structure and are close to the blocking structure, so that the two hangers 1 will not approach each other during pulling.

[0026] A pressing plate 12 is fixed to each stopper 11 by bolts to press the hanger 1 tightly. In this way, the hanger 1 can be quickly installed and disassembled.

[0027] like Figure 2 As shown, a V-shaped guide rail 8 is also provided on one side of the table panel 3, and three slide seats 9 are slidably connected to the V-shaped guide rail 8. A sensor fixing seat 17 is vertically fixed on each slide seat 9, and a proximity sensor 10 is installed on the top of the sensor fixing seat 17. The three proximity sensors 10 are respectively located at the front section, the middle section and the rear section in the moving direction of the slide plate 5, and are used to detect the moving position of the slide plate 5.

[0028] like Figure 5 , Figure 6 As shown, the hanger 1 is mainly composed of a crossbeam and a plurality of connecting plates 102, the connecting plate 102 is welded to one side of the crossbeam, and a gripping handle 103 is welded to the other side of the crossbeam. The connecting plate 102 is made of a U-shaped steel sheet, the middle part of which is relatively thin, and has a clamping piece 1021 for clamping with the ring on the tension spring, and a vertically through-hole is formed between the connecting plate 102 and the crossbeam to accommodate the tension spring so that the tension spring can pass through the avoidance hole when the diameter is large.

[0029] The snap-on piece 1021 will be inserted into the gap between two adjacent coils at both ends of the tension spring, and then the slide plate 5 will be controlled to move through the stretching drive mechanism 6 to stretch the tension spring outward by a certain length, so that all the tightening coils on the tension spring are separated and a gap is formed in the middle so that the electrophoresis liquid can enter the gap during electrophoresis.

[0030] refer to Figure 4 An auxiliary stopper 19 is also provided between two adjacent connecting plates 102. The auxiliary stopper 19 is fixed to the supporting base 4 and the slide plate 5 by bolts. The auxiliary stopper 19 is located in the middle part of the hanger 1 and also serves as a stopper.

[0031] In this embodiment, there are no hooks at both ends of the tension spring, so a connecting plate 102 is used to engage with the tension spring, and the distance between the two hangers 1 is increased by controlling the movement of the slide plate 5, thereby pulling the tension spring.

[0032] like Figure 4 As shown, a plurality of avoidance grooves 501 are provided on the support base 4 and the slide plate 5, and the avoidance grooves 501 correspond one-to-one to the connecting plates 102, so that when the diameter of the tension spring is larger, the lower side of the coil of the tension spring can reach down into the avoidance groove 501, and the avoidance groove 501 plays a role of giving way.

[0033] refer to Figure 6 , there are limit grooves 101 at both ends of the crossbeam of each hanger 1, and the lower side of the limit groove 101 extends obliquely downward to form a left-right misaligned structure to prevent the end of the support rod 2 from being embedded in the limit groove 101 and then detaching from the limit groove 101.

[0034] like Figure 7 As shown, in this embodiment, the two ends of the support rod 2 are thinner to form an embedded part 201, and the middle part is thicker to form a blocking part 202. The length of the thicker part in the middle of the support rod 2 is consistent with the distance between the two hangers 1. According to the different lengths of the tension springs, the distance between the two hangers 1 will also be different. At this time, it is necessary to replace the support rod 2 of the corresponding length according to the needs. The opposite sides of the two hangers 1 are respectively abutted against the two ends of the blocking part 202 on the support rod 2, so that the support rod 2 can open the two hangers 1. Under the action of the tension spring, the two hangers 1 and the two support rods 2 can form a square frame structure with high overall stability, so that the entire hanger can be placed in the electrophoresis tank for electrophoresis.

[0035] The tension spring loading and unloading equipment uses servo motor / PLC to automatically control the tension of the tension spring, and the stroke is adjustable. This hanger is a special hanger, which is strong enough to support the tension of the tension springs in a row and ensure that the hanger will not slip during electrophoresis. It can stretch and hold 5 tension springs side by side. During electrophoresis, multiple hangers can be stacked together for electrophoresis The electrophoresis stretching equipment is responsible for cooperating with the hanger in the whole process to stretch and maintain 5 tension springs in a row synchronously, and removing the support rods 2 on the left and right sides of the hanger after electrophoresis and disassembling the tension springs.

[0036] Example 2 like Figure 8As shown, in this embodiment, a plurality of connecting columns 104 are welded on the upper side of the crossbeam of the hanger 1. If both ends of the tension spring have hooks, the two ends of the tension spring can be connected with the connecting columns 104 on the two hangers 1 through the hooks, so that the two ends of the tension spring can also be fixed, and then the two hangers 1 are controlled to move away from each other through the tension spring loading and unloading equipment to stretch the tension spring, and finally the support rod 2 is placed on the two hangers 1 to spread the two hangers 1 apart, and finally the hanger is removed from the equipment, and the entire hanger is placed in the electrophoresis tank for electrophoresis. After the electrophoresis is completed, the hanger is re-fixed and installed on the automatic stretching equipment, and the tension spring is disassembled by the automatic stretching equipment.

[0037] Example 3 like Fig. 9 As shown, the difference between this embodiment and the above-mentioned embodiment lies in that external threads 203 are provided on the outer sides of the embedded parts 201 at both ends of the support rod 2, and nuts 204 are threadedly connected to the external threads 203, so that there is no need to replace the entire support rod 2. The two hangers 1 can be spread apart by adjusting the distance between the two nuts 204 at both ends of the support rod 2 according to the different distances between the two hangers 1. The adjustment is more flexible and the replacement cost can be reduced.

[0038] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A tension spring electrophoresis hanger, characterized in that: include: Two hangers (1), the two hangers (1) are arranged in parallel, each hanger (1) has a connecting piece for clamping with the end of the tension spring, and both ends of the hanger (1) have limiting grooves (101); Two support rods (2), the support rods (2) being arranged between the two hangers (1) to open the two hangers (1), so that the tension spring suspended between the two hangers (1) is in an extended state, and the two support rods (2) and the two hangers (1) together form a hanger with a frame structure; The two ends of the support rod (2) have an embedding portion (201) for embedding into the limiting groove (101) and a blocking portion (202) for preventing the two hangers (1) from approaching each other under the action of a tension spring, and the blocking portion (202) abuts against the inner side of the hanger (1).

2. The tension spring electrophoresis hanger according to claim 1, characterized in that: A plurality of connecting plates (102) are arranged on opposite sides of the two hanging racks (1), and a clamping piece (1021) for clamping with the end of a tension spring is provided in the middle of the connecting plate (102).

3. The tension spring electrophoresis hanger according to claim 2, characterized in that: The connecting plate (102) is in a U-shape, and a vertically penetrating avoidance hole is provided between the connecting plate (102) and the hanging bracket (1).

4. The tension spring electrophoresis hanger according to claim 1, characterized in that: External threads (203) are provided at both ends of the support rod (2), and nuts (204) are threadedly connected to the external threads (203).

5. The tension spring electrophoresis hanger according to claim 1, characterized in that: The hanger (1) is provided with a plurality of connecting columns (104) for engaging with hooks on the tension springs, and the connecting columns (104) are vertically fixed on the top of the hanger (1).

6. The tension spring electrophoresis hanger according to claim 1, characterized in that: The lower side of the limiting groove (101) extends obliquely downward.

7. A tension spring loading and unloading device, characterized in that: The method comprises the hanger according to any one of claims 1 to 6, further comprising: Countertops (3); A support base (4) and a slide plate (5), wherein the support base (4) is fixed to one end of the table panel (3), the slide plate (5) is horizontally slidably connected to the table panel (3), and two hangers (1) are respectively fixed to the support base (4) and the slide plate (5); A stretching drive mechanism (6), the stretching drive mechanism (6) being connected to the driving of the slide plate (5) to control the slide plate (5) to move closer to or farther from the support base (4); Both ends of the support base (4) and the slide plate (5) are provided with stoppers (11); the opposite sides of the two stoppers (11) on the support base (4) and the slide plate (5) protrude outward to form a stopper structure; the two ends of the hanger (1) are respectively tightly attached to the inner side of the stopper structure; and a pressure plate (12) for pressing the hanger (1) is provided on the stoppers (11).

8. The tension spring handling device according to claim 7, characterized in that: The stretching drive mechanism (6) comprises a servo motor (61) and a screw rod (62) connected to the output end of the servo motor (61); a motor fixing seat (18) is provided on the table panel (3); the servo motor (61) is fixedly mounted on the motor fixing seat (18); one end of the screw rod (62) passes through a support base (4) and is rotatably connected to a screw rod seat (14) fixed on the table panel (3); and the bottom of the slide plate (5) is drivingly connected to the screw rod (62).

9. The tension spring handling device according to claim 7, characterized in that: A V-shaped guide rail (8) is provided on one side of the table panel (3), and at least two slide seats (9) are slidably connected to the V-shaped guide rail (8). A sensor fixing seat (17) is vertically fixed to each of the slide seats (9), and a proximity sensor (10) is provided on the sensor fixing seat (17) to detect the sliding position of the slide plate (5).

10. The tension spring handling device according to claim 7, characterized in that: The support base (4) and the slide plate (5) are both provided with a plurality of avoidance grooves (501), and the avoidance grooves (501) correspond to the connecting members.

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