Preforming die for manufacturing U-shaped pipe of automobile seat backrest frame

Abstract

The utility model relates to the technical field of dies, in particular to a preforming die for manufacturing a U-shaped pipe of an automobile seat backrest frame. Comprising a bottom plate and an alignment mechanism, the alignment mechanism comprises a supporting table, a guide rod, a lower die body, a movable plate, a sliding sleeve, an alignment guide rail, an alignment sliding block, a connecting table, a stabilizing device and an in-place detection device, during machining, an unmachined pipe fitting is placed in a forming cavity of the lower die body, and then an external driving part is controlled to act to drive the movable plate to move downwards; when the upper die body moves downwards or upwards, the alignment sliding blocks vertically slide on the alignment guide rails, accurate alignment of the upper die body and the lower die body is greatly guaranteed, a sliding sleeve and a guide rod are matched to slide and guide a moving plate, and machining precision is improved. And meanwhile, alignment assistance is carried out, so that the die alignment precision can be improved during machining, and the product machining precision can be improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a pre-forming mold for manufacturing U-shaped tubes for automobile seat backrests. Background Technology

[0002] In the existing process of forming U-shaped tubes for car seat backrests, the unprocessed U-shaped tubes are not positioned. After processing, the two vertical rods are of unequal length, resulting in the failure of U-shaped tube forming. During the forming and extrusion process of the U-shaped tube, the bent part of the U-shaped tube will deform and generate heat. The U-shaped tube can only be removed after it has cooled down, which is time-consuming and inefficient.

[0003] A search revealed that prior art CN215785913U discloses a pre-forming mold for manufacturing U-shaped tubes for automotive seat backrests. The mold includes two connecting plates, an upper mold fixedly connected to the upper connecting plate, and a lower mold fixedly connected to the lower connecting plate. A rotating rod is rotatably connected to the lower mold, and a handle is fixedly connected to the front end of the rotating rod. A centering mechanism is provided between the rotating rod and the lower mold. The lower mold has a piston groove, and a sealing plate is slidably connected to it within the piston groove. A connecting rod is fixedly connected to the top of the sealing plate, passing through and slidably connecting to the lower mold. A fixing block is fixedly connected to the top of the connecting rod. A cooling mechanism is provided between the sealing plate and the lower mold. This invention uses the centering mechanism to fix the unprocessed U-shaped tube, ensuring the forming effect; the cooling mechanism cools the U-shaped tube during processing, saving processing time and improving processing efficiency.

[0004] However, the above-mentioned mold has the following problems in actual use: no alignment structure is set between the upper mold and the connecting plate and the lower mold, which makes it difficult to ensure the alignment accuracy when the upper mold moves down and aligns with the lower mold, thus reducing the product processing accuracy. Utility Model Content

[0005] The purpose of this invention is to provide a pre-forming mold for manufacturing U-shaped tubes for car seat backrests, which aims to improve the mold alignment accuracy during processing and thus improve the product processing accuracy.

[0006] To achieve the above objectives, this utility model provides a preforming mold for manufacturing U-shaped tubes for automobile seat backrests, including a base plate and an alignment mechanism;

[0007] The alignment mechanism includes a support platform, a guide rod, a lower mold body, a moving plate, a sliding sleeve, an alignment guide rail, an alignment slider, a connecting platform, a stabilizing device, and a positioning detection device. The support platform is detachably connected to the base plate and is located on the base plate. The guide rod is fixedly connected to the base plate and passes through the moving plate. The upper mold body is fixedly connected to the bottom of the moving plate. The lower mold body is located directly below the upper mold body and fixed to the support platform. The connecting platform is detachably installed on the top of the moving plate and is connected to the output end of an external drive component. The sliding sleeve is detachably connected to the moving plate and is slidably connected to the guide rod. The alignment guide rail is detachably connected to the support platform and is symmetrically arranged. The alignment slider is connected to the moving plate, and its T-shaped end can slide vertically in the T-shaped groove of the alignment guide rail. When the alignment slider is at its highest point, its T-shaped part does not detach from the alignment guide rail. The stabilizing device is located on the base plate and abuts against the support platform. The positioning detection device is located on both sides of the top of the support platform.

[0008] The outer cylindrical part at the bottom of the upper positioning plate of the sliding sleeve has a spline structure, and the spline structure slides in conjunction with the spline cavity on the moving plate.

[0009] The alignment mechanism further includes a support frame, which is detachably connected to the alignment guide rail and the base plate, and is set at an angle.

[0010] The stabilizing device includes a first support block and a second support block. The first support block is detachably connected to the base plate and abuts against the support platform, and is disposed on the front and rear sides of the support platform. The second support block is detachably connected to the base plate and abuts against the support platform, and is disposed on the left and right sides of the support platform.

[0011] The positioning detection device includes a mounting frame and a detection switch. The mounting frame is detachably connected to the support platform and is located on both sides of the top of the support platform, and at the bottom of the alignment slider. The detection switch is mounted on the mounting frame.

[0012] The pre-forming mold for manufacturing the U-shaped tube of the car seat backrest frame also includes a stabilizing mechanism. The stabilizing mechanism includes a U-shaped frame and a top plate. The U-shaped frame is detachably connected to the bottom plate, and four of them are provided. The top plate is detachably connected to the U-shaped frame and the guide rod respectively.

[0013] This utility model discloses a pre-forming mold for manufacturing U-shaped tubes for car seat backrest frames. During processing, the unprocessed tube is placed in the forming cavity of the lower mold body. Then, the external drive component is controlled to move the moving plate downward, thereby realizing the downward movement of the upper mold body and its cooperation with the lower mold body to complete the processing. When the upper mold body moves downward or upward, the alignment slider slides vertically on the alignment guide rail, which greatly ensures the precise alignment of the upper mold body and the lower mold body. The sliding sleeve and guide rod cooperate to guide the sliding plate and provide alignment assistance at the same time. This improves the mold alignment accuracy during processing and helps to improve the product processing accuracy. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of the pre-forming mold for manufacturing the U-shaped tube of the car seat backrest frame according to the first embodiment of this utility model.

[0016] Figure 2 This is a front view of the pre-forming mold for manufacturing the U-shaped tube of the car seat backrest frame according to the first embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the alignment slider according to the first embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the overall structure of the pre-forming mold for manufacturing the U-shaped tube of the car seat backrest frame according to the second embodiment of this utility model.

[0019] In the diagram: 101-base plate, 102-support platform, 103-guide rod, 104-lower mold body, 105-moving plate, 106-upper mold body, 107-sliding sleeve, 108-alignment guide rail, 109-alignment slider, 110-connecting platform, 111-support frame, 112-first support block, 113-second support block, 114-mounting bracket, 115-detection switch, 201-U-shaped frame, 202-top plate. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] Example 1:

[0022] like Figures 1 to 3 As shown, where Figure 1This is a schematic diagram of the overall structure of the pre-forming mold for manufacturing the U-shaped tube of a car seat backrest frame. Figure 2 This is a front view of a pre-forming mold for manufacturing U-shaped tubes for car seat backrests. Figure 3 This is a schematic diagram of the alignment slider 109. This utility model provides a pre-forming mold for manufacturing U-shaped tubes for automotive seat backrests: it includes a base plate 101 and an alignment mechanism. The alignment mechanism includes a support platform 102, a guide rod 103, a lower mold body 104, a moving plate 105, a sliding sleeve 107, an alignment guide rail 108, an alignment slider 109, a connecting platform 110, a support frame 111, a stabilizing device, and a positioning detection device. The stabilizing device includes a first support block 112 and a second support block 113. The positioning detection device includes a mounting frame 114 and a detection switch 115. The aforementioned solution can improve the mold alignment accuracy during processing, which is beneficial for improving product processing accuracy. It is understood that the aforementioned solution can improve mold alignment accuracy and product processing accuracy.

[0023] In this embodiment, the base plate 101 can be fixed by bolts.

[0024] The support platform 102 is detachably connected to the base plate 101 and is located on the base plate 101. The guide rod 103 is fixedly connected to the base plate 101 and passes through the moving plate 105. The upper mold body 106 is fixedly connected to the bottom of the moving plate 105. The lower mold body 104 is located directly below the upper mold body 106 and is fixed to the support platform 102. The connecting platform 110 is detachably installed on the top of the moving plate 105 and is connected to the output end of the external drive component. The sliding sleeve 107 is detachably connected to the moving plate 105 and is slidably connected to the guide rod 103. The alignment guide rail 108 is detachably connected to the support platform 102 and is symmetrically arranged. The alignment slider 109 is connected to the moving plate 105, and its T-shaped end can slide vertically in the T-shaped groove of the alignment guide rail 108. When the alignment slider 109 is at its highest point, its T-shaped part does not detach from the alignment guide rail 108. The stabilizing device is mounted on the base plate 101 and abuts against the support platform 102. The positioning detection device is mounted on both sides of the top of the support platform 102. The support platform 102 is fixed by positioning pins and bolts. The lower mold body 104 is fixed by positioning pins and countersunk bolts. The upper mold body 106 is fixed on the moving plate 105 by positioning pins and bolts. The moving plate 105 is connected to the connecting platform 110 by bolts. When the connecting platform 110 is set, it is first connected to the output end of an external driving component (such as a cylinder or hydraulic cylinder) by countersunk bolts, and then the connecting platform 110 is connected to the upper mold body 106 by bolts. In this application, the upper mold body 106 and the lower mold body 104 can directly adopt the upper mold and lower mold structure disclosed in the prior art CN215785913U. This application aims to improve the alignment accuracy of the upper mold and lower mold in the prior art, without improving the processing structure. The guide rod 103 has a T-shaped structure, and its bottom is connected to the base plate 101 by bolts. The distance by which its top extends beyond the sliding sleeve 107 is set so that the sliding sleeve 107 does not detach from the guide rod 103 when the upper mold body 106 moves upward and resets. The moving plate 105 has a through hole with a spline cavity structure to facilitate the installation of the spline end of the sliding sleeve 107 below the limiting plate. The limiting plate of the sliding sleeve 107 is connected to the moving plate 105 by bolts. The alignment guide rail 108 is fixed by positioning pins and bolts, and it has a non-through T-shaped groove from top to bottom. One end of the alignment slider 109 is connected to the moving plate 105 by bolts, and the other T-shaped end slides vertically in the T-shaped groove. The alignment guide rail 108 and the alignment slider 109 need to be replaced regularly to ensure the accuracy of the sliding line. The stabilizing device is used to improve the stability of the support platform 102 after installation, and the positioning detection device is used to monitor whether the mold is properly aligned.

[0025] The outer cylindrical part of the bottom of the upper limit plate of the sliding sleeve 107 has a spline structure, which slides in conjunction with the spline cavity on the moving plate 105. This structure helps to reduce the rotational shear force on the single fixing bolt of the limit plate of the sliding sleeve 107, thereby improving the installation stability of the sliding sleeve 107.

[0026] Secondly, the support frame 111 is detachably connected to the alignment guide rail 108 and the base plate 101, and is set at an angle. The two ends of the support frame 111 are fixed with bolts, which can improve the stability of the alignment guide rail 108 after installation.

[0027] Then, the first support block 112 is detached from the base plate 101 and abuts against the support platform 102, and is positioned on the front and rear sides of the support platform 102; the second support block 113 is detached from the base plate 101 and abuts against the support platform 102, and is positioned on the left and right sides of the support platform 102. The first support block 112 and the second support block 113 are fixed by bolts and positioning pins, respectively. After installation, they can further form a limiting structure in four directions on the front, rear, left, and right sides of the support platform 102, which helps to improve the stability of the support platform 102 after installation.

[0028] Finally, the mounting bracket 114 is detached from the support platform 102 and located on both sides of the top of the support platform 102, and simultaneously at the bottom of the alignment slider 109; the detection switch 115 is mounted on the mounting bracket 114. The mounting bracket 114 has a Z-shaped structure and is fixed to the support platform 102 by bolts. The detection switch 115 is a photoelectric switch with an external threaded column structure in the housing, which is easy to install directly on the mounting bracket 114 through its own threaded plate. When the upper mold body 106 and the lower mold body 104 are properly engaged, the detection switch 115 will detect the engagement signal of the alignment slider 109. Conversely, if the upper mold body 106 and the lower mold body 104 are not properly engaged, no corresponding signal will be detected. At this time, the external control PLC will control the corresponding alarm light to flash, prompting the operator that the mold is not properly engaged, so that the operator can handle it in time.

[0029] When using this invention to improve mold alignment accuracy and thus product processing accuracy, the unprocessed pipe is placed in the forming cavity of the lower mold body 104. Then, the external drive is controlled to move the moving plate 105 downward, thereby enabling the upper mold body 106 to move downward and cooperate with the lower mold body 104 to complete the processing. When the upper mold body 106 moves downward or upward, the alignment slider 109 slides vertically on the alignment guide rail 108 without disengaging, thus greatly ensuring the precise alignment of the upper mold body 106 and the lower mold body 104. The sliding sleeve 107 and the guide rod 103 cooperate to guide the moving plate 105 and provide alignment assistance, thereby improving mold alignment accuracy and improving product processing accuracy.

[0030] Example 2:

[0031] like Figure 4 As shown, where Figure 4 This is a schematic diagram of the overall structure of a pre-forming mold for manufacturing a U-shaped tube for a car seat backrest. Based on the first embodiment, this utility model provides a pre-forming mold for manufacturing a U-shaped tube for a car seat backrest. The pre-forming mold for manufacturing a U-shaped tube for a car seat backrest also includes a stabilizing mechanism, which includes a U-shaped frame 201 and a top plate 202.

[0032] The U-shaped frame 201 is detachably connected to the base plate 101, and four such frames are provided. The top plate 202 is detachably connected to both the U-shaped frame 201 and the guide rod 103. The bottom of the U-shaped frame 201 is connected to the base plate 101 via positioning pins and bolts, and the top is connected to the top plate 202 via positioning pins and bolts. The top plate 202 is connected to the top end of the guide rod 103 via bolts.

[0033] In this embodiment, by setting the U-shaped frame 201 and the top plate 202, the stability of the guide rod 103 can be improved, and the top end of the rod can be prevented from swaying when the top of the rod slides vertically on the moving plate 105 for too long.

[0034] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A preforming mold for manufacturing U-shaped tubes for automobile seat backrest frames, comprising a base plate, characterized in that: It also includes alignment mechanisms; The alignment mechanism includes a support platform, a guide rod, a lower mold body, a moving plate, a sliding sleeve, an alignment guide rail, an alignment slider, a connecting platform, a stabilizing device, and a positioning detection device. The support platform is detachably connected to the base plate and is located on the base plate. The guide rod is fixedly connected to the base plate and passes through the moving plate. The upper mold body is fixedly connected to the bottom of the moving plate. The lower mold body is located directly below the upper mold body and fixed to the support platform. The connecting platform is detachably installed on the top of the moving plate and is connected to the output end of an external drive component. The sliding sleeve is detachably connected to the moving plate and is slidably connected to the guide rod. The alignment guide rail is detachably connected to the support platform and is symmetrically arranged. The alignment slider is connected to the moving plate, and its T-shaped end can slide vertically in the T-shaped groove of the alignment guide rail. When the alignment slider is at its highest point, its T-shaped part does not detach from the alignment guide rail. The stabilizing device is located on the base plate and abuts against the support platform. The positioning detection device is located on both sides of the top of the support platform. The outer cylindrical part at the bottom of the upper positioning plate of the sliding sleeve has a spline structure, and the spline structure slides in conjunction with the spline cavity on the moving plate.

2. The pre-forming mold for manufacturing U-shaped tubes of automobile seat backrests as described in claim 1, characterized in that: The alignment mechanism also includes a support frame, which is detachably connected to the alignment guide rail and the base plate, and is set at an angle.

3. The pre-forming mold for manufacturing U-shaped tubes of automobile seat backrest frames as described in claim 1, characterized in that: The stabilizing device includes a first support block and a second support block. The first support block is detachably connected to the base plate and abuts against the support platform, and is disposed on the front and rear sides of the support platform. The second support block is detachably connected to the base plate and abuts against the support platform, and is disposed on the left and right sides of the support platform.

4. The pre-forming mold for manufacturing U-shaped tubes of automobile seat backrests as described in claim 1, characterized in that: The positioning detection device includes a mounting frame and a detection switch. The mounting frame is detachably connected to the support platform and is located on both sides of the top of the support platform, and at the bottom of the alignment slider. The detection switch is mounted on the mounting frame.

5. The pre-forming mold for manufacturing U-shaped tubes of automobile seat backrests as described in claim 1, characterized in that... : The pre-forming mold for manufacturing the U-shaped tube of the car seat backrest frame also includes a stabilizing mechanism. The stabilizing mechanism includes a U-shaped frame and a top plate. The U-shaped frame is detachably connected to the bottom plate, and four of them are provided. The top plate is detachably connected to the U-shaped frame and the guide rod respectively.

Images