Method for manufacturing a straight cylindrical metal hand form for the production of dipped products

Abstract

The application relates to a manufacturing method of a straight-cylinder metal hand mold for producing an impregnated product, which comprises the following steps: stamping a metal plate to obtain a blank left half palm and a blank right half palm, wherein the blank left half palm and the blank right half palm are sequentially provided with a finger section, a palm section and a wrist opening section in the length direction, the wrist opening section is reserved and shaped with a palm straight-cylinder section at a welding connection position; the blank left half palm and the blank right half palm are edge cut along the contour to obtain a left half palm and a right half palm, the left half palm and the right half palm are matched and welded to form a palm part; a metal pipe is cut to form a wrist cylinder part, a wrist straight-cylinder section is reserved and shaped at one end of the wrist cylinder part; and the palm straight-cylinder section of the palm part and the wrist straight-cylinder section of the wrist cylinder part are welded and connected. The palm straight-cylinder section and the wrist straight-cylinder section are welded and connected, the problem of welding section difference between the palm part and the wrist cylinder part can be solved, the true circularity when the palm part and the wrist cylinder part are welded can be ensured, and the production quality can be effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of hand mold manufacturing processes, and in particular to a method for manufacturing a cylindrical metal hand mold for impregnation product production. Background Technology

[0002] Currently, stainless steel metal hand molds offer stable dimensional accuracy, good thermal conductivity, corrosion resistance, and can be produced in various thicknesses. These characteristics perfectly suit the requirements of glove production using latex, silicone, PVC, nitrile, and other materials. Stainless steel metal hand molds are suitable for large-scale production, low processing costs, high production efficiency, lightweight, high rigidity, high thermal conductivity, corrosion resistance, high temperature resistance and oxidation resistance, good shock resistance, long service life, low maintenance, easy operation, and large profit margins.

[0003] Stainless steel hand molds consist of a palm section, a wrist section, and a base section. The wrist section connects the palm section and the base section, and is welded to both the palm and the base. Existing stainless steel hand molds have the following problems: the welded area between the palm and wrist section is elliptical, while the upper part of the wrist section is circular. This makes direct welding of the palm and wrist section difficult, resulting in poor splicing and welding, and easily leading to defects such as step differences and ripples after welding. This reduces the production quality of the stainless steel hand mold, thus requiring improvement. Summary of the Invention

[0004] To improve production quality, this application provides a method for manufacturing a cylindrical metal hand mold for producing impregnated products.

[0005] The manufacturing method of a cylindrical metal hand mold for producing impregnated products provided in this application adopts the following technical solution:

[0006] A method for manufacturing a cylindrical metal hand mold for producing impregnated products includes the following steps:

[0007] The left and right halves of the blank are stamped on a metal sheet. The left and right halves of the blank are, along the length direction, finger segment, palm segment and wrist segment respectively. The wrist segment is reserved and formed into a straight cylindrical section of the palm at its welding joint. The left and right halves of the blank are cut along the contour to obtain the left and right halves of the palm. The left and right halves of the blank are joined and welded together to form the palm.

[0008] The metal tube is cut into sections to form the wrist section, and a straight section of the wrist section is reserved and formed at one end of the wrist section.

[0009] The palm section of the hand is welded to the wrist section of the wrist.

[0010] Preferably, the lengths of the palm section and the wrist section are 5 mm.

[0011] Preferably, in the process of stamping the left and right halves of the blank onto a metal sheet, the side edges of the metal sheet are bent during stamping to form folded edges at the openings of the wrist sections of the left and right halves of the blank.

[0012] Preferably, the left and right halves of the blank are trimmed along the contour to obtain the left and right halves of the palm, and then the left and right halves of the palm are joined together and welded to form the palm portion, including the following steps:

[0013] Cut along the contour of the left and right halves of the blank to obtain the left and right halves, while retaining the folded edges on the left and right halves of the blank.

[0014] The left and right halves of the palm are joined together and welded to form the palm part;

[0015] Round off the folded edge at the opening of the wrist joint on the palm.

[0016] Preferably, the width of the folded edge is between 5mm and 10mm.

[0017] Preferably, the palm section of the hand and the wrist section of the wrist are welded together using a laser welding device.

[0018] The laser welding equipment includes a frame, a worktable mounted on the frame, a hand mold positioning mechanism mounted on the worktable, and a welding gun mounted on the worktable and located on one side of the hand mold positioning mechanism.

[0019] The hand mold positioning mechanism includes a rotating shaft rotatably mounted on the worktable and a drive mechanism disposed on the worktable for driving the rotating shaft to rotate. A positioning disk is disposed on the rotating shaft, and a positioning fixture is vertically fixed at the center of the positioning disk. An inner tensioning part is fixed on the positioning fixture. A stripper plate is sleeved on the positioning fixture and placed on the positioning disk. A positioning sleeve is sleeved on the positioning fixture and placed on the stripper plate. The positioning sleeve is used for the wrist sleeve part to be fitted and installed, and the inner tensioning part is used for the palm part to be fitted and installed. A telescopic drive part is disposed on the worktable for driving the inner tensioning part to move to fix the palm part.

[0020] The nozzle of the welding gun is directed towards the joint between the wrist and the palm.

[0021] Preferably, the inner tensioning part includes an inner tensioning sleeve, one end of which is fixed to the positioning fixture, and the other end of which has a plurality of tensioning grooves. The plurality of tensioning grooves are evenly distributed along the circumferential direction of the inner tensioning sleeve, and the length direction of the tensioning grooves extends along the axial direction of the inner tensioning sleeve. The other end of the inner tensioning sleeve is divided by the plurality of tensioning grooves to form a plurality of tensioning blocks, and each tensioning block has an outwardly protruding tensioning convex surface on its outer wall surface. The telescopic drive part is used to drive each tensioning block to expand radially outward.

[0022] Preferably, the telescopic drive unit includes a pull rod and a tension rod. The pull rod passes through the axial center line of the rotating shaft, the positioning fixture, and the inner tension sleeve. The tension rod is fixed to the end of the pull rod. The other end of the inner tension sleeve has a first tension cone surface around its center. The end of the tension rod has a second tension cone surface that mates with the first tension cone surface.

[0023] The frame has a telescopic drive component at its bottom for driving the extension and retraction of the tie rod.

[0024] Preferably, a support frame is provided on the worktable, and a pressing mechanism for pressing the palm part is provided above the hand mold positioning mechanism on the support frame, and an outer limiting mechanism for pressing the palm part and wrist part is provided on one side of the hand mold positioning mechanism on the support frame.

[0025] Preferably, the external limiting mechanism includes two limiting cylinders fixedly mounted on the support frame. The two limiting cylinders are symmetrically arranged on both sides of the hand mold positioning mechanism. A limiting plate is installed on the output rod of the limiting cylinder. Two limiting wheels are rotatably mounted on the limiting plate. The two limiting wheels are arranged side by side with intervals. The wheel surfaces of the two limiting wheels abut against the joint between the wrist tube and the palm.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This application solves the problem of welding section difference between the palm and wrist sections by welding the palm section and wrist section together, while ensuring the roundness of the palm and wrist sections during welding, thus effectively improving production quality.

[0028] 2. By setting up straight sections for the palm and wrist, this application can effectively adapt to the error in the length of the palm and wrist sections. The palm and wrist straight sections can adapt to slight up and down movements, thereby ensuring the quality of the weld seam between the palm and wrist sections.

[0029] 3. In this application, the wrist tube is formed by cutting a metal tube into sections, which eliminates the need for additional expansion of the metal tube, thereby improving the yield, reducing the production difficulty and increasing the production efficiency. Attached Figure Description

[0030] Figure 1 This is a flowchart illustrating the manufacturing process of a cylindrical metal hand mold used in the production of impregnated products.

[0031] Figure 2 This is a schematic diagram showing the process of forming a folded edge by stamping a metal sheet.

[0032] Figure 3 This is a structural diagram of a metal hand mold.

[0033] Figure 4 This is a schematic diagram of the first structure of a laser welding equipment.

[0034] Figure 5 This is a schematic diagram of the second structure of the laser welding equipment.

[0035] Figure 6 This is a schematic diagram of the hand mold positioning mechanism.

[0036] Figure 7 This is a structural schematic diagram of the telescopic drive unit.

[0037] Figure 8 yes Figure 7 Enlarged schematic diagram of part A in the middle.

[0038] Figure 9 This is a structural diagram of the pressing mechanism and the outer limit mechanism.

[0039] Explanation of reference numerals in the attached drawings: 100, upper stamping die; 110, lower stamping die; 120, metal sheet; 130, folded edge; 140, palm part; 150, wrist part; 160, base; 170, palm straight section; 180, wrist straight section; 1, frame; 2, worktable; 3, hand mold positioning mechanism; 31, rotating shaft; 32, bearing seat; 33, positioning plate; 34, positioning fixture; 35, internal tensioning part; 351, internal tensioning sleeve; 352, tensioning groove; 353, tensioning block; 354, tensioning convex surface; 36, stripper plate; 37, positioning sleeve; 38, telescopic drive part; 381. 382. Pull rod; 383. First tensioning cone surface; 384. Second tensioning cone surface; 385. Support column; 386. Drive plate; 387. Telescopic drive cylinder; 388. Mounting sleeve; 389. Thrust disc bearing; 390. Connecting block; 32. Drive mechanism; 321. Support plate; 322. Drive motor; 4. Welding gun; 5. Welding bracket; 6. Top rod; 7. Support frame; 8. Pressing mechanism; 81. Pressing cylinder; 82. Pressing plate; 83. Pressing sleeve; 84. Pressing positioning block; 9. External limit mechanism; 91. Limiting cylinder; 92. Limiting plate; 93. Limiting wheel. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0041] A method for manufacturing a cylindrical metal hand mold for producing impregnated products, referring to... Figure 1 As shown, the process includes the following steps: Step S100, a blank left half palm and a blank right half palm are stamped on a metal sheet 120, wherein the blank left half palm and the blank right half palm are, in order along the length direction, a finger segment, a palm segment and a wrist segment, and the wrist segment has a reserved and formed palm straight cylindrical segment 170 at its welding connection.

[0042] According to the technical solution defined in step S100, specifically, refer to... Figure 2 and Figure 3 As shown, the metal sheet 120 is made of stainless steel and is pre-cut into a rectangle. The size of the rectangle can be set according to the size of the palm 140. The metal sheet 120 is stamped using a stamping die, which has an upper stamping die and a lower stamping die 110. By placing the metal sheet 120 between the upper stamping die and the lower stamping die 110, a blank left half and a blank right half of the palm are obtained. The blank left half and blank right half of the palm correspond to the left and right half of the palm, respectively, but the blank left half and blank right half of the palm have waste edges. By removing the waste edges, the left half and right half of the palm are obtained.

[0043] The left and right halves of the blank are, along their length, the finger segment, the palm segment, and the wrist segment. The wrist segment has a pre-formed and shaped palm straight cylindrical segment 170 at its welding connection. The welding connection of the wrist segment is the opening end face of the wrist segment. The palm straight cylindrical segment 170 starts at the welding connection and has a length of 5mm.

[0044] It is worth noting that in the process of stamping the left and right halves of the blank onto the metal sheet 120, the side edges of the metal sheet 120 are bent during stamping to form folded edges 130 at the openings of the wrist sections of the left and right halves of the blank. Specifically, by placing the metal sheet 120 between the upper and lower stamping dies 110 for stamping, the side edges of the metal sheet 120 are close to the edge of the lower stamping die 110 and a reserved section is left. Thus, when the upper stamping die stamps and stretches the metal sheet 120, the metal sheet 120 forms either the left or right half of the blank, and the side edges of the metal sheet 120 are bent during stamping to form folded edges 130 at the openings of the wrist sections of the left and right halves of the blank. In one embodiment, the width of the folded edges 130 is between 5mm and 10mm, preferably 5mm.

[0045] Due to the characteristics of stainless steel, when the blank left and right half of the palm are stamped from the metal sheet 120, there will be a certain amount of springback in the blank left and right half of the palm. The above-mentioned folding edge 130 setting can ensure the roundness and size of the blank left and right half of the palm in the straight cylindrical section 170 of the palm.

[0046] Step S200: Cut the left and right halves of the blank along the contour to obtain the left and right halves of the palm, and weld the left and right halves of the palm together to form the palm part 140.

[0047] According to the technical solution defined in step S200, specifically, the left and right halves of the blank are cut along the contour to obtain the left and right halves of the palm, and the left and right halves of the palm are joined and welded together to form the palm portion 140, including the following steps:

[0048] Cut along the contour of the left and right halves of the blank to obtain the left and right halves, while retaining the folded edge 130 on the left and right halves of the blank.

[0049] Specifically, the left half of the blank and the right half of the blank correspond to the left half of the blank and the right half of the blank. When cutting off the waste edge, only the waste edge is cut along the outline of the left half of the blank and the right half of the blank, but the folded edge 130 on the left half of the blank and the right half of the blank is not cut off at this time.

[0050] The left and right halves of the palm are joined together and welded to form the palm portion 140.

[0051] Specifically, the left and right halves of the palm are joined and positioned, and then laser welding is performed along the joint between the left and right halves. Before laser welding, the left and right halves are fixed by spot welding at intervals and then laser welding is performed around the joint. After the left and right halves of the palm are welded, a 140° palm part will be formed.

[0052] Round off the folded edge 130 at the opening of the 140mm wrist section of the palm.

[0053] Specifically, the opening of the wrist section of the palm 140 has a folded edge 130. The palm 140 is welded together with the left and right halves of the palm, and the folded edge 130 has a circular structure on the palm 140. At this time, according to the preset roundness size of the wrist section 150, the folded edge 130 at the opening of the wrist section of the palm 140 is rounded off to ensure the roundness and size of the opening of the wrist section of the palm 140.

[0054] Step S300: Cut the metal tube into segments to form a wrist tube 150, and reserve and form a straight wrist tube 180 at one end of the wrist tube 150.

[0055] According to the technical solution defined in step S300, specifically, the metal tube is made of stainless steel. After the metal tube is polished by sanding, it can be cut to the required length. The cut metal tube is the wrist tube 150. By leaving a gap at one end of the wrist tube 150 and shaping it to be round, it becomes the wrist straight tube section 180. The wrist straight tube section 180 extends from the end opening of the wrist tube 150, and the length of the wrist straight tube section 180 is 5mm.

[0056] In step S400, the palm section 170 of the palm portion 140 is welded to the wrist section 180 of the wrist portion 150.

[0057] According to the technical solution defined in step S400, specifically, the palm straight section 170 and the wrist straight section 180 are welded using a laser welding device. After the palm section 140 and the wrist section 150 are welded together, the base 160 is then welded to the other end of the wrist section 150 to complete the production of the entire metal hand mold.

[0058] Therefore, by maintaining the same roundness dimensions of the palm straight section 170 and the wrist straight section 180, the palm straight section 170 and the wrist straight section 180 can be welded together, which can solve the problem of welding section difference between the palm part 140 and the wrist part 150, and at the same time ensure the roundness of the palm part 140 and the wrist part 150 during welding, so as to effectively improve the production quality.

[0059] This application, through the setting of the palm straight section 170 and the wrist straight section 180, can effectively adapt to the error in the length of the palm section 140 and the wrist section 150. The palm straight section 170 and the wrist straight section 180 can adapt to slight up and down movements, thereby ensuring the quality of the weld seam between the palm section 140 and the wrist section 150.

[0060] Compared to traditional stepped tubes, the tube portion 150 in this application can be polished as a whole before cutting, or the tube portion 150 can be automatically polished after the metal tube is cut. Furthermore, the tube portion 150 in this application is formed by cutting metal tubes, eliminating the need for additional tube expansion, thereby improving the yield, reducing production difficulty, and increasing production efficiency.

[0061] The traditional stepped tube section 150 requires 3-5 tube expansion processes after the metal tube is cut into sections. The tube expansion efficiency is low, the yield is low, and the surface deformation and scratches are serious. In addition, manual polishing is required after tube expansion, which cannot achieve automated continuous polishing and greatly reduces the manufacturing friendliness.

[0062] The palm section 170 of the palm portion 140 and the wrist section 180 of the wrist portion 150 are welded together using a laser welding device.

[0063] Reference Figure 4 and Figure 5 As shown, the laser welding equipment includes a frame 1, a worktable 2 mounted on the frame 1, a hand mold positioning mechanism 3 mounted on the worktable 2, and a welding gun 4 mounted on the worktable 2 and located to one side of the hand mold positioning mechanism 3. The hand mold positioning mechanism 3 is used to install the wrist cylinder 150 and the palm 140. After the wrist cylinder 150 and the palm 140 are installed, the welding gun 4 can weld the joint between the wrist cylinder 150 and the palm 140 to form a hand mold.

[0064] Reference Figure 6 , Figure 7 and Figure 9 As shown, the hand mold positioning mechanism 3 includes a rotating shaft 31 rotatably mounted on the worktable 2, and a drive mechanism 32 set on the worktable 2 for driving the rotating shaft 31 to rotate. The worktable 2 is provided with an installation port, and bearing seats 32 are provided on the upper and lower surfaces of the worktable 2 around the installation port. The rotating shaft 31 is installed in the bearing seats 32 to achieve rotatable installation on the worktable 2. The rotating shaft 31 is set on the worktable 2 in the vertical direction.

[0065] The drive mechanism 32 includes a support plate 321 fixed below the worktable 2 and a drive motor 322 fixed on the support plate 321. A first synchronous pulley is mounted on the output shaft of the drive motor 322, and a second synchronous pulley is sleeved on the rotating shaft 31. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt.

[0066] A positioning disk 33 is fixedly installed at the upper end of the rotating shaft 31. A positioning fixture 34 is fixed at the center of the positioning disk 33. The positioning fixture 34 has a cylindrical structure and is arranged vertically. An inner tensioning part 35 is fixed at the upper end of the positioning fixture 34. A stripper plate 36 is attached to the outer sleeve of the positioning fixture 34. The stripper plate 36 is placed on the positioning disk 33. The stripper plate 36 is not fixed to the positioning fixture 34 and can move freely relative to the positioning fixture 34. A positioning sleeve 37 is attached to the outer sleeve of the positioning fixture 34. The positioning sleeve 37 is placed on the stripper plate 36. The positioning sleeve 37 is not fixed to the positioning fixture 34 and can move freely relative to the positioning fixture 34.

[0067] The positioning sleeve 37 is used for the wrist tube part 150 to be fitted and installed. The lower end of the wrist tube part 150 will abut against the positioning shoulder of the positioning sleeve 37. The upper end of the wrist tube part 150 extends to the position of the inner tensioning part 35. The inner tensioning part 35 is used for the palm part 140 to be fitted and installed. At this time, the splice seam between the wrist tube part 150 and the palm part 140 will be located at the position of the inner tensioning part 35. The worktable 2 is provided with a telescopic drive part 38 that drives the inner tensioning part 35 to move to fix the palm part 140.

[0068] A welding bracket 5 is provided on the workbench 2. The welding gun 4 is fixed on the welding bracket 5. The horizontal height of the nozzle of the welding gun 4 is level with the horizontal height of the joint between the wrist tube 150 and the palm 140. The nozzle of the welding gun 4 faces the joint between the wrist tube 150 and the palm 140.

[0069] This application first attaches the wrist sleeve 150 to the positioning sleeve 37, and then attaches the palm part 140 to the inner tensioning part 35. At this time, the end of the palm part 140 and the end of the wrist sleeve 150 are spliced ​​and aligned. Then, the inner tensioning part 35 tensions and fixes the splice gap between the palm part 140 and the wrist sleeve 150. The drive mechanism 32 drives the positioning fixture 34 to rotate, and the welding gun 4 can be aligned with the splice gap between the palm part 140 and the wrist sleeve 150 to perform welding, thereby completing the welding of the palm part 140 and the wrist sleeve 150. The above method can solve the problems of weld misalignment and step difference, and at the same time realize the semi-automation of welding, improving welding efficiency and quality.

[0070] Reference Figure 6 and Figure 7As shown, the inner tensioning part 35 includes an inner tensioning sleeve 351. One end of the inner tensioning sleeve 351 is fixed on the positioning fixture 34. The upper end of the positioning fixture 34 is provided with a mounting groove. The lower end of the inner tensioning sleeve 351 has an extension end, which is inserted into the mounting groove and locked with screws.

[0071] The other end of the inner tensioning sleeve 351 is provided with a plurality of tensioning grooves 352, which are evenly distributed along the circumferential direction of the inner tensioning sleeve 351. The length direction of the tensioning grooves 352 extends along the axial direction of the inner tensioning sleeve 351. The other end of the inner tensioning sleeve 351 is divided into a plurality of tensioning blocks 353 by the plurality of tensioning grooves 352. Each tensioning block 353 has an outwardly protruding tensioning convex surface 354 on its outer wall surface. The telescopic drive unit 38 is used to drive each tensioning block 353 to expand radially outward. The tensioning convex surface 354 is used to fit and contact the inner wall surface of the wrist cylinder portion 150 and the palm portion 140, and the telescopic drive unit 38 can round the wrist straight cylinder section 180 and the palm straight cylinder section 170, ensuring the roundness of the wrist straight cylinder section 180 and the palm straight cylinder section 170 during welding.

[0072] Reference Figure 7 and Figure 8 As shown, the telescopic drive unit 38 includes a pull rod 381 and a tension rod 382. The pull rod 381 passes through the axial center line of the rotating shaft 31, the positioning fixture 34, and the inner tension sleeve 351. That is, the rotating shaft 31, the positioning fixture 34, the inner tension sleeve 351, and the positioning sleeve 37 have through holes along their axial center lines for the pull rod 381 to pass through. The through holes pass through both ends of the rotating shaft 31, both ends of the positioning fixture 34, both ends of the inner tension sleeve 351, and both ends of the positioning sleeve 37, respectively.

[0073] The tension rod 382 is fixed to the end of the pull rod 381. The other end of the inner tension sleeve 351 is provided with a first tension cone surface 383 around its center. The end of the tension rod 382 has a second tension cone surface 384 that cooperates with the first tension cone surface 383. The frame 1 is provided with a telescopic drive component for driving the pull rod 381 to extend and retract.

[0074] The telescopic drive component includes a support column 385 fixed below the worktable 2. The support column 385 is specifically fixed on a support plate 321 below the worktable 2. A drive plate 386 is slidably mounted on the support column 385. A telescopic drive cylinder 387 is fixed on the support column 385. The output shaft of the telescopic drive cylinder 387 is fixed on the lower surface of the drive plate 386. The end of the pull rod 381 is connected to the upper surface of the drive plate 386.

[0075] Since the pull rod 381 needs to have a driving force for pulling up and down, and also needs to be able to rotate with the inner tensioning part 35, the connection structure between the pull rod 381 and the drive plate 386 adopts the following method: a mounting sleeve 388 is fixed on the upper surface of the drive plate 386, the mounting sleeve 388 has a mounting cavity, and a thrust disc bearing 389 is installed inside the mounting sleeve 388. The thrust disc bearing 389 is installed on the inner top surface of the mounting sleeve 388, and a connecting block 390 that mates with the thrust disc bearing 389 is fixed to the end of the pull rod 381. Through the abutment between the connecting block 390 and the thrust disc bearing 389, when the pull rod 381 pulls the tension rod 382 to drive the inner tensioning block 353 to expand outward, and when the inner tensioning sleeve 351 rotates, the pull rod 381 can also rotate with the inner tensioning sleeve 351.

[0076] A push rod 6 is fixed vertically on the drive plate 386. The push rod 6 passes through the worktable 2 to lift the stripper plate 36. The upper end of the push rod 6 is not connected to the stripper plate 36. The push rod 6 only serves to lift the stripper plate 36. The stripper plate 36 drives the positioning sleeve 37 to move so as to disengage the hand mold from the inner tension part 35.

[0077] Reference Figure 2 and Figure 9 As shown, a support frame 7 is provided on the workbench 2. The support frame 7 is provided with a pressing mechanism 8 for pressing the palm part 140 above the hand mold positioning mechanism 3. The support frame 7 is provided with an outer limiting mechanism 9 for pressing the palm part 140 and the wrist tube part 150 on one side of the hand mold positioning mechanism 3.

[0078] The pressing mechanism 8 includes a pressing cylinder 81 fixed on the support frame 7. A pressing plate 82 is installed on the output rod of the pressing cylinder 81. A pressing sleeve 83 is rotatably installed on the pressing plate 82. A pressing positioning block 84 is fixed on the pressing sleeve 83. A plurality of pressing positioning holes are provided on the pressing positioning block 84 for fitting with the fingers of the palm part 140.

[0079] The outer limiting mechanism 9 includes two limiting cylinders 91 fixedly mounted on the support frame 7. The two limiting cylinders 91 are symmetrically arranged on both sides of the hand mold positioning mechanism 3. A limiting plate 92 is installed on the output rod of the limiting cylinder 91. Two limiting wheels 93 are rotatably mounted on the limiting plate 92. The two limiting wheels 93 are arranged side by side with a gap, and the wheel surfaces of the two limiting wheels 93 abut against the joint between the wrist cylinder and the palm. The pressing mechanism 8 is used to press the palm part 140 onto the wrist cylinder part 150, and the outer limiting mechanism 9 is used to press the joint between the palm part 140 and the wrist cylinder part 150 from the outside.

[0080] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for manufacturing a cylindrical metal hand mold for producing impregnated products, characterized in that, Includes the following steps: The blank left half palm and blank right half palm are stamped on the metal sheet (120), wherein the blank left half palm and blank right half palm are finger segment, palm segment and wrist segment in sequence along the length direction, and the wrist segment is reserved and formed into a straight cylindrical segment (170) of the palm at its welding connection. The left and right halves of the blank are cut along the contour to obtain the left and right halves of the palm. The left and right halves of the palm are then joined together and welded to form the palm part (140). The metal tube is cut into sections to form a wrist tube (150), and a straight section (180) is reserved and formed at one end of the wrist tube (150). The palm section (170) of the palm part (140) is welded to the wrist section (180) of the wrist part (150). In the process of welding the palm section (170) of the palm part (140) and the wrist section (180) of the wrist part (150), the welding is performed by laser welding equipment; The laser welding equipment includes a frame (1), a worktable (2) set on the frame (1), a hand mold positioning mechanism (3) set on the worktable (2), and a welding gun (4) set on the worktable (2) and located on one side of the hand mold positioning mechanism (3); The hand mold positioning mechanism (3) includes a rotating shaft (31) rotatably mounted on the worktable (2) and a drive mechanism (32) mounted on the worktable (2) for driving the rotating shaft (31) to rotate. A positioning disk (33) is provided on the rotating shaft (31), and a positioning fixture (34) is vertically fixed at the center of the positioning disk (33). An inner tensioning part (35) is fixed on the positioning fixture (34), and a stripper plate (36) is sleeved on the positioning fixture (34). The stripping plate (36) is placed on the positioning plate (33), the positioning fixture (34) is fitted with a positioning sleeve (37), the positioning sleeve (37) is placed on the stripping plate (36), the positioning sleeve (37) is used for the wrist tube part (150) to be fitted and installed, the inner tensioning part (35) is used for the palm part (140) to be fitted and installed, and the worktable (2) is provided with a telescopic drive part (38) for driving the inner tensioning part (35) to move to fix the palm part (140); The nozzle of the welding gun (4) is directed toward the joint between the wrist tube (150) and the palm (140).

2. The method for manufacturing a cylindrical metal hand mold for producing impregnated products according to claim 1, characterized in that, The lengths of the palm section (170) and the wrist section (180) are 5 mm.

3. The method for manufacturing a cylindrical metal hand mold for producing impregnated products according to claim 1, characterized in that, In the process of stamping the left and right halves of the blank on the metal sheet (120), the side edge of the metal sheet (120) is bent during stamping and forms a folded edge (130) at the opening of the wrist section of the left and right halves of the blank, respectively.

4. The method for manufacturing a cylindrical metal hand mold for producing impregnated products according to claim 3, characterized in that, The left and right halves of the blank are trimmed along the contour to obtain the left and right halves of the palm. The left and right halves of the palm are then joined together and welded to form the palm part (140), including the following steps: Cut along the contour of the left and right halves of the blank to obtain the left and right halves, while retaining the folded edges (130) on the left and right halves of the blank. The left and right halves of the palm are joined together and welded to form the palm part (140); The folded edge (130) at the opening of the wrist section of the palm (140) is rounded off.

5. The method for manufacturing a cylindrical metal hand mold for producing impregnated products according to claim 3, characterized in that, The width of the folded edge (130) is between 5mm and 10mm.

6. The method for manufacturing a cylindrical metal hand mold for producing impregnated products according to claim 1, characterized in that, The inner tensioning part (35) includes an inner tensioning sleeve (351). One end of the inner tensioning sleeve (351) is fixed on the positioning fixture (34). The other end of the inner tensioning sleeve (351) is provided with a plurality of tensioning grooves (352). The plurality of tensioning grooves (352) are evenly distributed along the circumferential direction of the inner tensioning sleeve (351). The length direction of the tensioning grooves (352) extends along the axial direction of the inner tensioning sleeve (351). The other end of the inner tensioning sleeve (351) is divided by the plurality of tensioning grooves (352) to form a plurality of tensioning blocks (353). Each tensioning block (353) has an outwardly protruding tensioning convex surface (354) on its outer wall surface. The telescopic drive unit (38) is used to drive each of the tension blocks (353) to expand radially outward.

7. The method for manufacturing a cylindrical metal hand mold for producing impregnated products according to claim 6, characterized in that, The telescopic drive unit (38) includes a pull rod (381) and a tension rod (382). The pull rod (381) passes through the axial center line of the rotating shaft (31), the positioning fixture (34) and the inner tension sleeve (351). The tension rod (382) is fixed to the end of the pull rod (381). The other end of the inner tension sleeve (351) has a first tension cone surface (383) around its center. The end of the tension rod (382) has a second tension cone surface (384) that cooperates with the first tension cone surface (383). The frame (1) is provided with a telescopic drive component at the bottom for driving the extension and retraction of the tie rod (381).

8. The method for manufacturing a cylindrical metal hand mold for producing impregnated products according to claim 1, characterized in that, The workbench (2) is provided with a support frame (7). The support frame (7) is provided with a pressing mechanism (8) for pressing the palm part (140) above the hand mold positioning mechanism (3). The support frame (7) is provided with an outer limiting mechanism (9) for pressing the palm part (140) and the wrist tube part (150) on one side of the hand mold positioning mechanism (3).

9. A method for manufacturing a cylindrical metal hand mold for producing impregnated products according to claim 8, characterized in that, The external limiting mechanism (9) includes two limiting cylinders (91) fixedly mounted on the support frame (7). The two limiting cylinders (91) are symmetrically arranged on both sides of the hand mold positioning mechanism (3). A limiting plate (92) is installed on the output rod of the limiting cylinder (91). Two limiting wheels (93) are rotatably mounted on the limiting plate (92). The two limiting wheels (93) are arranged side by side with intervals. The wheel surfaces of the two limiting wheels (93) abut against the joint between the wrist tube part (150) and the palm part (140).

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