An automatic die-changing fixture for a bumper and its die-changing method

Abstract

The present invention relates to the technical processing field of automotive parts, and specifically discloses an automatic die-changing fixture for a bumper and a die-changing method thereof. The die-changing fixture includes: a frame, a lateral displacement mechanism and two vertical displacement mechanisms installed on the frame, a bumper mounting bracket A installed on the lateral displacement mechanism, and a bumper mounting bracket B installed on the two vertical displacement mechanisms; the lateral displacement mechanism includes: two guide rails, sliders installed on the guide rails, a support frame installed on the sliders, a rodless cylinder installed on the frame body, and the two vertical displacement mechanisms are arranged on both sides of the two guide rails. The vertical displacement mechanism includes: at least one set of lifting cylinders, a dust-proof safety cover and a cylinder bracket; the advantages of the present invention are: by adding a lateral displacement mechanism and two vertical displacement mechanisms to the bumper mounting bracket A and the bumper mounting bracket B, operations can be carried out at the same station, maximizing the utilization rate of the equipment while not changing the operating habits of the operators.

Description

Technical Field

[0001] The present invention relates to the technical processing field of automotive parts, and specifically discloses an automatic die-changing fixture for a bumper and a die-changing method thereof. Background Art

[0002] An automotive bumper is a safety device that absorbs and reduces external impact forces and protects the front and rear parts of the vehicle body. Components such as liners, fog lights, fender liners, wiring harnesses, radars, and brackets need to be installed on the front bumper of a vehicle. The installation mode of the front bumper of the existing Bora car is as follows: In the factory building, an installation area for the front bumper is demarcated according to the model of the front bumper. A production fixture for the front bumper is processed at the middle position of the demarcated installation area. The above-mentioned components to be installed are placed in areas on the ground around the front bumper installation rack. This method occupies a large area, and a group of workers needs to be equipped for the production and processing of each model of the front bumper, resulting in high production costs and severely restricting production efficiency. In addition, due to production process problems, a certain production fixture often lies idle. Summary of the Invention

[0003] In view of the above problems, the purpose of the present invention is to provide an automatic die-changing fixture for a bumper, which is used to integrate two bumper installation racks into one device, solve the problems of a large number of workers and large floor space occupation, and overcome the above-mentioned deficiencies of the prior art.

[0004] The automatic die-changing fixture for a bumper provided by the present invention includes: a frame, a lateral displacement mechanism and two vertical displacement mechanisms installed on the frame, a bumper installation rack A installed on the lateral displacement mechanism, and a bumper installation rack B installed on the two vertical displacement mechanisms;

[0005] The frame includes: a rectangular frame body, an electric control box installed on the frame body, and industrial casters installed at the four corner positions of the bottom of the frame body;

[0006] The lateral displacement mechanism includes: two guide rails, sliders installed on the guide rails, a support frame installed on the sliders, a rodless cylinder installed on the frame body to push the support frame to slide on the guide rails. The two mutually parallel guide rails are horizontally fixedly connected to the frame body relative to the ground. Two groups of the sliders are respectively slidably connected to the guide rails. The support frame includes: a support base, at least two support rods fixedly connected to the support base, and an installation frame seat fixedly connected to the top ends of the support rods. The support base is fixedly connected to the installation surfaces of the two groups of sliders. The rodless cylinder is horizontally arranged between the two guide rails and is parallel to the guide rails. The piston of the rodless cylinder is directly or fixedly connected to the support base through a connecting mechanism. The bumper installation rack A is installed on the installation frame seat;

[0007] The two vertical displacement mechanisms are arranged on both sides of the two guide rails. The vertical displacement mechanism includes: at least one set of lifting cylinders, a dust-proof safety cover, and a cylinder bracket. The lifting cylinders are installed in the cylinder installation grooves of the frame body. The free end of the piston rod of the lifting cylinder is fixedly connected to the bottom of the cylinder bracket. The dust-proof safety cover is sleeved on the lifting cylinder, and its top end is fixedly connected to the bottom surface of the cylinder bracket. The bumper mounting bracket B is fixedly connected to the cylinder brackets of the two vertical displacement mechanisms.

[0008] Preferably, a foot switch assembly for controlling the rodless cylinder and the lifting cylinder is arranged at the bottom of the frame body near the vertical displacement mechanism. A manual safety lock is arranged on the frame body near each vertical displacement mechanism, and the manual safety lock is used to lock the vertical displacement mechanism.

[0009] Preferably, the frame body includes: cylinder installation grooves at both ends, an electric control box installation groove installed in one of the cylinder installation grooves, and a foot switch mounting bracket installed at the bottom of the frame body.

[0010] Preferably, a front and rear stroke lock for controlling the rodless cylinder is installed at the edge position of the cylinder installation groove.

[0011] Preferably, a three-button box for controlling the electric control box is arranged on the support frame. A controller for controlling the rodless cylinder and the lifting cylinder is arranged in the electric control box, and the controller is used to control the start-stop and interlocking of the rodless cylinder and the lifting cylinder.

[0012] Preferably, the bumper mounting bracket A is composed of a main mounting bracket and two wing extension brackets. The two wing extension brackets are fixedly connected to both ends of the main mounting bracket, and an angle of 120° - 140° is formed between the wing extension bracket and the main mounting bracket.

[0013] Another object of the present invention is to provide a control method for an automatic die-changing fixture for a bumper, which specifically includes the following steps:

[0014] Step S1: When the bumper mounting bracket A is working, use the foot switch or the three-button box to synchronously control the lifting cylinders of the two vertical displacement mechanisms to descend through the controller in the electric control box, and the lifting cylinders drive the cylinder brackets to retract into the cylinder installation grooves of the frame body.

[0015] Step S2: After the vertical displacement mechanism in Step S1 retracts into the cylinder mounting groove of the frame body, the controller controls the rodless cylinder of the horizontal displacement mechanism to act. The rodless cylinder drives the support frame to move towards the vertical displacement mechanism. After moving to the stroke position of the rodless cylinder, at this time, the support frame of the horizontal displacement mechanism is directly above the vertical displacement mechanism. Then, use the manual safety lock to lock the vertical displacement mechanism in the cylinder mounting groove, and use the front and rear stroke locks to lock the horizontal displacement mechanism. The operator places the bumper on the bumper mounting bracket A to work;

[0016] Step S3: When the bumper mounting bracket B is working, unlock the front and rear stroke locks and the manual safety lock in Step S2. Use the foot switch or the triple-button box to control the rodless cylinder of the horizontal displacement mechanism to act through the controller in the electric control box. The rodless cylinder drives the support frame to move away from the vertical displacement mechanism. After moving to the stroke position of the rodless cylinder, at this time, the support frame of the horizontal displacement mechanism is away from the vertical displacement mechanism;

[0017] Step S4: Use the foot switch or the triple-button box to synchronously control the lifting cylinders of the two vertical displacement mechanisms to rise through the controller in the electric control box. The lifting cylinders drive the cylinder brackets to move from the cylinder mounting grooves of the frame body to the stroke positions of the lifting cylinders. Then, use the manual safety lock to lock the vertical displacement mechanisms, and use the front and rear stroke locks to lock the horizontal displacement mechanisms. The operator places the bumper on the bumper mounting bracket B to work.

[0018] The advantages and positive effects of the present invention are:

[0019] 1. By integrating the bumper mounting bracket A and the bumper mounting bracket B onto one fixture, compared with the problem that each original bumper mounting fixture requires component storage racks such as liners, fog lights, fender panels, wiring harnesses, radars, and brackets to be equipped on the ground around it, the site is utilized to the maximum extent, and the site occupancy rate is reduced to the lowest. By adding a horizontal displacement mechanism and two vertical displacement mechanisms to the bumper mounting bracket A and the bumper mounting bracket B to achieve operations at the same station, while not changing the operating habits of the operators, the utilization rate of the equipment is maximized.

[0020] 2. In the lateral displacement mechanism of the present invention, the rodless cylinder directly drives the bumper mounting bracket A to perform lateral displacement on the fixture and is guided by two auxiliary guide rails. On the one hand, it makes the sliding of the bumper mounting bracket A smoother and faster. On the other hand, it makes its overall structure more compact, without the need to make the frame body of the die-changing fixture larger. In addition, through the design of the support frame, the rodless cylinder does not need to slide directly below the two vertical displacement mechanisms, reducing the power consumption of the rodless cylinder and also solving the damage to the stop block when the rodless cylinder often slides to the limit position.

[0021] 3. The present invention uses two hidden vertical displacement mechanisms to lift the bumper mounting bracket B, which not only solves the avoidance problem of the lateral displacement mechanism but also requires separately designing the bracket of the bumper mounting bracket A. A corrugated dust-proof safety cover is installed on the lifting cylinder of the vertical displacement mechanism. On the one hand, it protects the lifting cylinder of the vertical displacement mechanism from dust and ash. On the other hand, it also protects the operating workers working at the vertical displacement mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By referring to the following description in conjunction with the drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become clearer and easier to understand. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure according to an embodiment of the present invention.

[0024] Figure 2 It is a front view of the overall structure according to an embodiment of the present invention.

[0025] Figure 3 It is a side view of the overall structure according to an embodiment of the present invention.

[0026] Figure 4 It is a top view of the overall structure according to an embodiment of the present invention.

[0027] The reference numerals therein include: frame 1, lateral displacement mechanism 2, vertical displacement mechanism 3, frame body 4, electric control box 5, industrial casters 6, electric control box installation groove 7, foot switch mounting bracket 8, guide rail 9, slider 10, rodless cylinder 12, support base 13, support rod 14, mounting bracket seat 15, lifting cylinder 16, dust-proof safety cover 17, cylinder support 18, cylinder installation groove 19, foot switch assembly 20, manual safety lock 21, triple button box 22, main mounting bracket 23, flank extension bracket 24, front and rear stroke lock 25. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In the following description, for purposes of explanation, in order to provide a thorough understanding of one or more embodiments, numerous specific details are set forth. However, it is apparent that the embodiments can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

[0029] Figures 1-4 A schematic diagram of the overall structure according to an embodiment of the present invention is shown.

[0030] The present invention includes: a frame 1, a lateral displacement mechanism 2 mounted on the frame 1 and two vertical displacement mechanisms 3, a bumper mounting bracket A mounted on the lateral displacement mechanism 2 and a bumper mounting bracket B mounted on the two vertical displacement mechanisms 3;

[0031] Refer to Figures 1-4 , the frame 1 of the present invention includes: a rectangular frame body 4, an electric control box 5 mounted on the frame body 4, and four industrial casters 6 mounted at the four corner positions at the bottom of the frame body 4; the frame body 4 includes: cylinder mounting grooves 19 at both ends, an electric control box mounting groove 7 mounted in one of the cylinder mounting grooves 19, and a foot switch mounting bracket 8 mounted at the bottom of the frame body 4. The electric control box 5 is mounted in the electric control box mounting groove 7, and the vertical displacement mechanism 3 is mounted in the cylinder mounting groove 19.

[0032] Refer to Figures 1-4 , the lateral displacement mechanism 2 of the present invention includes: two guide rails 9, two sliders 10 mounted on the guide rails 9, a support frame mounted on the two sliders 10, and a rodless cylinder 12 mounted on the frame body 4 to push the support frame to slide on the guide rails 9. The two mutually parallel guide rails 9 are fixedly connected to the frame body 4 horizontally relative to the ground. The four sliders 10 are divided into two groups and respectively slidably connected to the guide rails 9. The support frame includes: a support base 13, at least two support rods 14 fixedly connected to the support base 13, and a mounting bracket seat 15 fixedly connected to the top ends of the support rods 14. The support base 13 is fixedly connected to the mounting surfaces of the two sliders 10. The rodless cylinder 12 is horizontally arranged between the two guide rails 9 and is parallel to the guide rails 9. The piston of the rodless cylinder 12 is directly fixedly connected to the support base 13. The bumper mounting bracket A is mounted on the mounting bracket seat 15;

[0033] Refer to Figures 1-4, the two vertical displacement mechanisms 3 of the present invention are arranged on both sides of the two guide rails 9. The vertical displacement mechanism 3 includes: at least one set of lifting cylinders 16, a dust-proof safety cover 17, and a cylinder bracket 18. The lifting cylinder 16 is installed in the cylinder mounting groove 19 of the frame body 4. The free end of the piston rod of the lifting cylinder 16 is fixedly connected to the bottom of the cylinder bracket 18. The dust-proof safety cover 17 is sleeved on the lifting cylinder 16, and its top end is fixedly connected to the bottom surface of the cylinder bracket 18. The bumper mounting bracket B is fixedly connected to the cylinder brackets 18 of the two vertical displacement mechanisms 3. A foot switch assembly 20 for controlling the rodless cylinder 12 and the lifting cylinder 16 is arranged at the bottom of the frame body 4 near the vertical displacement mechanism 3. A manual safety lock 21 is arranged on the frame body 4 near each vertical displacement mechanism 3. The manual safety lock 21 is used to lock the vertical displacement mechanism 3. A front and rear stroke lock 25 for controlling the rodless cylinder 12 is installed at the outer edge position of the cylinder mounting groove 19.

[0034] Refer to Figure 1 , a three-button box 22 for controlling the electric control box 5 is arranged on the support frame of the present invention. A controller for controlling the rodless cylinder 12 and the lifting cylinder 16 is arranged in the electric control box 5. The controller is used to control the start, stop, and interlock of the rodless cylinder 12 and the lifting cylinder 16.

[0035] Refer to Figures 1-4 , the bumper mounting bracket A of the present invention is composed of a main mounting bracket 23 and two wing extension brackets 24. The two wing extension brackets 24 are fixedly connected to both ends of the main mounting bracket 23. An included angle of 130° is formed between the wing extension bracket 24 and the main mounting bracket 23.

[0036] The control method of the bumper automatic die-changing jig of the present invention specifically includes the following steps:

[0037] Step S1: When the bumper mounting bracket A is working, use the foot switch assembly 20 or the three-button box 22 to synchronously control the lifting cylinders 16 of the two vertical displacement mechanisms 3 to descend through the controller in the electric control box 5. The lifting cylinders 16 drive the cylinder brackets 18 to retract into the cylinder mounting grooves 19 of the frame body 4.

[0038] Step S2: After the vertical displacement mechanism 3 in Step S1 retracts into the cylinder mounting groove 19 of the frame body 4, the controller controls the rodless cylinder 12 of the horizontal displacement mechanism 2 to act. The rodless cylinder 12 drives the support frame to move towards the vertical displacement mechanism 3. After moving to the stroke position of the rodless cylinder 12, at this time, the support frame of the horizontal displacement mechanism 2 is directly above the vertical displacement mechanism 3. Then, the vertical displacement mechanism 3 is locked in the cylinder mounting groove 19 by using the manual safety lock 21, and the horizontal displacement mechanism 2 is locked by using the front and rear stroke lock 25. The operator places the bumper on the bumper mounting bracket A to work;

[0039] Step S3: When the bumper mounting bracket B is working, unlock the front and rear stroke lock 25 and the manual safety lock 21 in Step S2. Use the foot switch assembly 20 or the triple button box 22 to control the rodless cylinder 12 of the horizontal displacement mechanism 2 to act through the controller in the electric control box 5. The rodless cylinder 12 drives the support frame to move away from the vertical displacement mechanism 3. After moving to the stroke position of the rodless cylinder 12, at this time, the support frame of the horizontal displacement mechanism 2 is away from the vertical displacement mechanism 3;

[0040] Step S4: Use the foot switch assembly 20 or the triple button box 22 to synchronously control the lifting cylinders 16 of the two vertical displacement mechanisms 3 to rise through the controller in the electric control box 5. The lifting cylinders 16 drive the cylinder brackets 18 to move from the cylinder mounting grooves 19 of the frame body 4 to the stroke positions of the lifting cylinders 16. Then, the vertical displacement mechanism 3 is locked by using the manual safety lock 21, and the horizontal displacement mechanism 2 is locked by using the front and rear stroke lock 25. The operator places the bumper on the bumper mounting bracket B to work.

[0041] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An automatic die-changing fixture for a bumper, characterized in that, it includes: a frame, a lateral displacement mechanism installed on the frame, and two vertical displacement mechanisms, a bumper mounting bracket A installed on the lateral displacement mechanism, and a bumper mounting bracket B installed on the two vertical displacement mechanisms; the frame includes: a rectangular frame body, an electric control box installed on the frame body, and industrial casters installed at the four corner positions at the bottom of the frame body; the lateral displacement mechanism includes: two guide rails, sliders installed on the guide rails, a support frame installed on the sliders, a rodless cylinder installed on the frame body to push the support frame to slide on the guide rails, the two mutually parallel guide rails are fixedly connected to the frame body horizontally relative to the ground, and the two groups of sliders are respectively slidably connected to the guide rails. The support frame includes: a support base, at least two support rods fixedly connected to the support base, and a mounting bracket seat fixedly connected to the top of the support rods. The support base is fixedly connected to the mounting surfaces of the two groups of sliders. The rodless cylinder is horizontally arranged between the two guide rails and is parallel to the guide rails. The piston of the rodless cylinder is directly or fixedly connected to the support base through a connecting mechanism. The bumper mounting bracket A is installed on the mounting bracket seat; the two vertical displacement mechanisms are arranged on both sides of the two guide rails. The vertical displacement mechanism includes: at least one set of lifting cylinders, a dust-proof safety cover, and a cylinder bracket. The lifting cylinders are installed in the cylinder mounting grooves of the frame body. The free end of the piston rod of the lifting cylinder is fixedly connected to the bottom of the cylinder bracket. The dust-proof safety cover is sleeved on the lifting cylinder, and its top is fixedly connected to the bottom surface of the cylinder bracket. The bumper mounting bracket B is fixedly connected to the cylinder brackets of the two vertical displacement mechanisms; a foot switch assembly for controlling the rodless cylinder and the lifting cylinder is arranged at the bottom of the frame body near the vertical displacement mechanism. A manual safety lock is arranged on the frame body near each vertical displacement mechanism. The manual safety lock is used to lock the vertical displacement mechanism; a three-button box for controlling the electric control box is arranged on the support frame. A controller for controlling the rodless cylinder and the lifting cylinder is arranged in the electric control box. The controller is used to control the start, stop, and interlock of the rodless cylinder and the lifting cylinder.

2. The automatic die-changing fixture for a bumper according to claim 1, characterized in that, the frame body includes: cylinder mounting grooves at both ends, an electric control box mounting groove installed in one of the cylinder mounting grooves, and a foot switch mounting installed at the bottom of the frame body.

3. The automatic die-changing fixture for a bumper according to claim 1, characterized in that, a front and rear stroke lock for controlling the rodless cylinder is installed at the edge position of the cylinder mounting groove.

4. The automatic die-changing fixture for a bumper according to claim 1, characterized in that, the bumper mounting bracket A is composed of a main mounting bracket and two side wing extension brackets. The two side wing extension brackets are fixedly connected to both ends of the main mounting bracket. An angle of 120° - 140° is formed between the side wing extension brackets and the main mounting bracket.

5. A control method for an automatic die-changing fixture of a bumper, according to claim 1, characterized in that, it includes the following steps: Step S1: When the bumper mounting bracket A is working, use the foot switch or the triple-button box to synchronously control the lifting cylinders of the two vertical displacement mechanisms to descend through the controller in the electric control box, and the lifting cylinders drive the cylinder brackets to retract into the cylinder mounting grooves of the frame body; Step S2: After the vertical displacement mechanism in Step S1 retracts into the cylinder mounting groove of the frame body, the controller controls the rodless cylinder of the horizontal displacement mechanism to act, and the rodless cylinder drives the support frame to move towards the vertical displacement mechanism. After moving to the stroke position of the rodless cylinder, at this time, the support frame of the horizontal displacement mechanism is located directly above the vertical displacement mechanism. Then, use the manual safety lock to lock the vertical displacement mechanism in the cylinder mounting groove, and use the front and rear stroke locks to lock the horizontal displacement mechanism. The operator places the bumper on the bumper mounting bracket A for work; Step S3: When the bumper mounting bracket B is working, unlock the front and rear stroke locks and the manual safety lock in Step S2, and use the foot switch or the triple-button box to control the rodless cylinder of the horizontal displacement mechanism to act through the controller in the electric control box. The rodless cylinder drives the support frame to move away from the vertical displacement mechanism. After moving to the stroke position of the rodless cylinder, at this time, the support frame of the horizontal displacement mechanism is far away from the vertical displacement mechanism; Step S4: Use the foot switch or the triple-button box to synchronously control the lifting cylinders of the two vertical displacement mechanisms to rise through the controller in the electric control box. The lifting cylinders drive the cylinder brackets to move from the cylinder mounting grooves of the frame body to the stroke positions of the lifting cylinders. Then, use the manual safety lock to lock the vertical displacement mechanism, and use the front and rear stroke locks to lock the horizontal displacement mechanism. The operator places the bumper on the bumper mounting bracket B for work.

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