Wheel shell blanking forming punching die

Abstract

The utility model discloses a wheel shell blanking forming punching die, which includes an upper die assembly, a lower die assembly and a demoulding assembly, wherein the upper die assembly includes a top plate, a partition plate, an upper positioning die frame, a nitrogen spring, a blanking stretching ring for forming a cylindrical annular portion of a wheel shell, a top forming ring for forming a truncated cone annular portion of a wheel shell, a cylindrical punch for forming a circular hole in the middle of the truncated cone annular portion and a mold positioning column; the lower die assembly includes a bottom plate, a support block, a seat plate, a pad, a mold core positioning frame, a mold core for forming an inner cavity of a wheel shell, a support frame plate, a blanking outer die plate, a plate positioning plate and a mold positioning sleeve. The utility model wheel shell blanking forming punching die can complete the three processes of blanking, stretching forming and punching of the wheel shell in a centralized manner, thereby saving processes, improving the production efficiency of the wheel shell and reducing production costs.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a molding mold for a wheel shell. Background Art

[0002] like Figure 1 The part named wheel shell 1 is composed of a cylindrical annular portion 101 and a truncated cone annular portion 102. In the prior art, the wheel shell is produced by stamping. The production process is to first punch out a circular blank on a blanking die, then punch out the wheel shell shape on a stretching die, and finally punch out a circular hole in the middle of the truncated cone annular portion 102 on a punching die. Since multiple processes and multiple sets of dies are required to complete the wheel shell production, the production efficiency is low. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a wheel shell blanking forming punching die to solve the technical problems in the prior art that the wheel shell needs to go through multiple processes to be formed and the production efficiency is low.

[0004] The utility model discloses a wheel shell blanking forming punching die, comprising an upper die assembly, a lower die assembly and a demoulding component;

[0005] The upper die assembly comprises a top plate, a partition, an upper positioning die frame, a nitrogen spring, a blanking stretching ring for forming a cylindrical annular portion of a wheel shell, a top molding ring for molding a truncated cone-shaped annular portion of a wheel shell, a cylindrical punch for molding a circular hole in the middle of the truncated cone-shaped annular portion, and a mold positioning column. The top plate, the partition and the upper die frame are sequentially connected from top to bottom, the blanking stretching ring, the top molding ring and the cylindrical punch are sequentially nested and arranged in the upper positioning die frame from outside to inside, and the blanking stretching ring die and the cylindrical punch are fixedly connected to the partition, the cylinder of the nitrogen spring is fixed on the partition, the telescopic rod of the nitrogen spring is connected to the top molding ring, and the top molding ring is respectively slidably matched with the blanking stretching ring and the cylindrical punch, and the mold positioning column is vertically fixed on the upper positioning die frame;

[0006] The lower mold assembly comprises a bottom plate, a support block, a seat plate, a pad, a mold core positioning frame, a mold core for forming the inner cavity of the wheel shell, a support frame plate, a blanking outer template, a plate positioning plate and a mold positioning sleeve. The bottom plate, support block, seat plate, pad, mold core positioning frame, support frame plate, blanking outer template and plate positioning plate are fixedly connected in sequence from bottom to top. The mold core is arranged in the mold core positioning frame, and the lower end surface of the mold core is located on the pad. A waste discharge hole is arranged in the middle of the mold core, pad and seat plate. The blanking outer template and the plate positioning plate are provided with through holes that slide up and down with the blanking stretching ring. The plate positioning plate is provided with a guide groove that slides with the wheel shell raw material plate. The mold positioning sleeve is vertically fixed on the blanking outer template. The mold positioning column and the mold positioning sleeve slide up and down. The support frame plate, the blanking outer template and the plate positioning plate are provided with through holes that cooperate with the mold positioning column.

[0007] The demoulding assembly includes a support rod that slides up and down with the base plate, a support plate arranged on the support rod, a push rod arranged on the support plate, and a demoulding ring located at the upper end of the push rod. The seat plate, the pad plate and the core positioning frame are provided with through holes that slide up and down with the push rod. The demoulding ring is arranged between the support frame plate and the core, and the demoulding ring slides up and down with the support frame plate and the core respectively.

[0008] Beneficial effects of the utility model:

[0009] The utility model discloses a wheel shell blanking forming punching die which can centrally complete three working procedures of blanking, stretching forming and punching of the wheel shell, thereby saving working procedures, improving the wheel shell production efficiency and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the wheel shell.

[0011] Figure 2 It is a schematic diagram of the three-dimensional structure of the wheel shell blanking forming punching die.

[0012] Figure 3 It is a schematic diagram of the cross-sectional structure of the wheel shell blanking forming punching die.

[0013] Figure 4 It is a schematic diagram of the cross-sectional structure of the wheel shell blanking forming punching die in another position. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] As shown in the figure, the wheel shell blanking forming punching die in this embodiment includes an upper die assembly, a lower die assembly and a demoulding component.

[0016] The upper mold assembly includes a top plate 2, a partition plate 3, an upper positioning mold frame 4, a nitrogen spring 5, a blanking stretching ring 6 for forming the cylindrical annular portion 101 of the wheel shell 1, a top molding ring 7 for molding the truncated cone-shaped annular portion of the wheel shell, a cylindrical punch 8 for molding the middle circular hole of the truncated cone-shaped annular portion 101, and a mold positioning column 9. The top plate, the partition plate and the upper mold frame are connected in sequence from top to bottom, and the blanking stretching ring, the top molding ring and the cylindrical punch are nested in sequence from outside to inside in the upper positioning mold frame, and the blanking stretching ring mold and the cylindrical punch are fixedly connected to the partition plate, the cylinder body of the nitrogen spring is fixed on the partition plate, the telescopic rod of the nitrogen spring is connected to the top molding ring, and the top molding ring is respectively slidably matched with the blanking stretching ring and the cylindrical punch, and the mold positioning column is vertically fixed on the upper positioning mold frame;

[0017] The lower mold assembly includes a base plate 10, a support block 11, a seat plate 12, a pad 13, a core positioning frame 14, a core 15 for forming the inner cavity of the wheel shell, a support frame plate 16, a blanking outer template 17, a plate positioning plate 18 and a clamping mold positioning sleeve 19. The base plate, support block, seat plate, pad, core positioning frame, support frame plate, blanking outer template and plate positioning plate are fixedly connected in sequence from bottom to top. The core is arranged in the core positioning frame, and the lower end surface of the core is located on the pad. A waste discharge hole 20 is arranged in the middle of the core, pad and seat plate. The blanking outer template and the plate positioning plate are provided with through holes that slide up and down with the blanking stretching ring. The plate positioning plate is provided with a guide groove 22 that slides with the wheel shell raw material plate 21. The clamping mold positioning sleeve is vertically fixed on the blanking outer template. The clamping mold positioning column and the clamping mold positioning sleeve slide up and down, and the support frame plate, the blanking outer template and the plate positioning plate are provided with through holes that cooperate with the clamping mold positioning column.

[0018] The demoulding assembly includes a support rod 23 that slides up and down with the base plate, a support plate 24 arranged on the support rod, a push rod 25 arranged on the support plate and a demoulding ring 26 located at the upper end of the push rod. The seat plate, the pad plate and the core positioning frame are provided with through holes that slide up and down with the push rod. The demoulding ring is arranged between the support frame plate and the core, and the demoulding ring slides up and down with the support frame plate and the core respectively.

[0019] During the stamping process, the upper die assembly moves downward under the drive of the press. First, the blanking stretching ring 6 contacts the wheel shell raw material plate 21, and the upper die assembly continues to move downward, and the blanking stretching ring 6 punches out a circular plate from the wheel shell raw material plate 21 to complete the blanking process. Then the upper die assembly continues to move downward, and the blanking stretching ring 6 continues to push the circular plate, and at the same time, the top molding ring 7 also begins to push the circular plate, thereby gradually completing the stretching molding of the wheel shell shape and inner cavity. After the wheel shell is stretch-formed, the upper die assembly continues to move downward under the drive of the press. At this time, the top molding ring 7 is forced to continue to compress the nitrogen spring 5, so that the lower end of the cylindrical punch 8 extends out of the inner hole of the top molding ring 7, so that the cylindrical punch 8 acts on the wheel shell to punch out the circular hole in the middle of the truncated cone-shaped annular portion 102.

[0020] After the wheel shell is stamped and formed, the upper mold assembly moves upward and resets under the drive of the press, and the demoulding assembly moves upward under the drive of the demoulding hydraulic cylinder, so that the wheel shell on the mold core 15 is withdrawn upward to realize the demoulding of the wheel shell.

[0021] The wheel shell blanking, forming and punching die in this embodiment can complete the three working steps of blanking, stretching and punching of the wheel shell in one go, thereby saving working steps, improving the wheel shell production efficiency and reducing the production cost.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. The wheel shell blanking forming punching die includes an upper die assembly, a lower die assembly and a demoulding assembly, and is characterized by: The upper die assembly comprises a top plate, a partition, an upper positioning die frame, a nitrogen spring, a blanking stretching ring for forming a cylindrical annular portion of a wheel shell, a top molding ring for molding a truncated cone-shaped annular portion of a wheel shell, a cylindrical punch for molding a circular hole in the middle of the truncated cone-shaped annular portion, and a mold positioning column. The top plate, the partition and the upper die frame are sequentially connected from top to bottom, the blanking stretching ring, the top molding ring and the cylindrical punch are sequentially nested and arranged in the upper positioning die frame from outside to inside, and the blanking stretching ring die and the cylindrical punch are fixedly connected to the partition, the cylinder of the nitrogen spring is fixed on the partition, the telescopic rod of the nitrogen spring is connected to the top molding ring, and the top molding ring is respectively slidably matched with the blanking stretching ring and the cylindrical punch, and the mold positioning column is vertically fixed on the upper positioning die frame; The lower mold assembly comprises a bottom plate, a support block, a seat plate, a pad, a mold core positioning frame, a mold core for forming the inner cavity of the wheel shell, a support frame plate, a blanking outer template, a plate positioning plate and a mold positioning sleeve. The bottom plate, support block, seat plate, pad, mold core positioning frame, support frame plate, blanking outer template and plate positioning plate are fixedly connected in sequence from bottom to top. The mold core is arranged in the mold core positioning frame, and the lower end surface of the mold core is located on the pad. A waste discharge hole is arranged in the middle of the mold core, pad and seat plate. The blanking outer template and the plate positioning plate are provided with through holes that slide up and down with the blanking stretching ring. The plate positioning plate is provided with a guide groove that slides with the wheel shell raw material plate. The mold positioning sleeve is vertically fixed on the blanking outer template. The mold positioning column and the mold positioning sleeve slide up and down. The support frame plate, the blanking outer template and the plate positioning plate are provided with through holes that cooperate with the mold positioning column. The demoulding assembly includes a support rod that slides up and down with the base plate, a support plate arranged on the support rod, a push rod arranged on the support plate, and a demoulding ring located at the upper end of the push rod. The seat plate, the pad plate and the core positioning frame are provided with through holes that slide up and down with the push rod. The demoulding ring is arranged between the support frame plate and the core, and the demoulding ring slides up and down with the support frame plate and the core respectively.

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