Precise mechanical part machining die

Abstract

The utility model relates to the technical field of machining dies, and particularly discloses a precision mechanical part machining die which comprises a die base, a lower die is fixed to the upper surface of the die base through bolts, and a forming cavity is formed in the lower die. Ejection mechanisms used for taking out workpieces in an auxiliary mode are symmetrically installed at the upper end of the mold base. And the ejection mechanism comprises four fixed blocks, the four fixed blocks are all oppositely fixed to the upper end of the mold base, movable rods penetrate through the interiors of the four fixed blocks, and the outer surfaces of the movable rods are sleeved with springs connected with the fixed blocks in an abutting mode. By means of the arranged ejection mechanism, in the extending and resetting process of a spring, a movable block can be pushed to reset, a connecting rod pushes an ejection plate to move, a workpiece formed in the lower die is pushed out, impurities on the inner wall of the lower die can be scraped away by a scraping strip in the moving process, and therefore next stamping machining is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of processing molds, in particular to a precision mechanical parts processing mold. Background Art

[0002] Molds refer to precision forming tools used for batch forming, stamping and other products. Mold accuracy mainly includes the part accuracy obtained in processing and the quality awareness of ensuring product accuracy during production, but the mold accuracy usually refers to the accuracy of the mold working parts. Precision machinery parts processing molds are important tools for manufacturing precision machinery parts, and their accuracy and quality are crucial to the performance of the final product.

[0003] Existing precision machinery parts processing molds are often used to stamp workpieces of one specification, and cannot be used to stamp workpieces of different specifications, which makes the use of traditional precision machinery parts processing molds limited;

[0004] The existing patent (publication number: CN214517006U) discloses a precision mechanical parts processing mold, which includes a base plate and an upper mold arranged above the base plate. It uses a rotating shaft to drive the connecting plate to rotate, so that the clamping plate can fix the molds of different specifications, facilitate the processing of workpieces of different specifications, and can limit and fix the rotating shaft to avoid the occurrence of unstable clamping caused by the rotation of the rotating shaft.

[0005] In view of the above problems, although the solution provided by the existing patent is capable of assembling and using lower molds of different specifications to facilitate the processing of workpieces of different specifications, since the workpiece is inside the mold after being stamped, it is impossible to eject the workpiece, resulting in more troublesome workpiece removal. Summary of the invention

[0006] The purpose of the utility model is to provide a precision mechanical parts processing mold, in which the spring itself stretches and resets, and the movable block is pushed to reset, and the connecting rod pushes the ejector plate to move, so that the workpiece formed in the lower mold is pushed out to the outside. During the movement, the scraper strip can scrape off the impurities on the inner wall of the lower mold, which is beneficial to the next stamping process, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precision mechanical parts processing mold, comprising a mold base, a lower mold is fixed to the upper surface of the mold base by bolts, a molding cavity is opened inside the lower mold, and an ejection mechanism for assisting the removal of a workpiece is symmetrically installed on the upper end of the mold base;

[0008] The ejection mechanism includes a fixed block, and four of the fixed blocks are provided. The four fixed blocks are all fixed to the upper end of the mold base, and a movable rod is passed through the inside of the four fixed blocks. The outer surface of the movable rod is sleeved with a spring abutting and connected with the fixed block, and the upper surface of the spring is abutting and connected with the movable block, and the upper surface of the movable block is fixed with a fixed rod, and the lower end of the movable rod passes through the inner wall of the mold base and is fixed with a mounting plate, and the inner wall of the mounting plate is fixed with two fixed plates, and the upper ends of the two fixed plates are fixed with connecting rods, and the upper end of the connecting rod passes through the mold base and is fixed with an ejection plate.

[0009] Preferably, guide rods fixedly connected to the mold base are passed through the interior of the two fixing plates.

[0010] Preferably, a limit plate is fixed in the horizontal direction inside the lower mold, and a scraper strip tightly fitting with the inner wall of the lower mold is fixed on the outer wall of the ejection plate.

[0011] Preferably, fixing frames are fixed at both ends of the mold base in the vertical direction, and a top plate is fixed at the upper end of the fixing frame.

[0012] Preferably, four hydraulic cylinders are fixed to the upper surface of the top plate by bolts, and the telescopic ends of the four hydraulic cylinders penetrate the top plate and are fixed with mounting parts.

[0013] Preferably, four positioning tubes plug-connected to the fixing rods are symmetrically fixed on the lower surface of the mounting member.

[0014] Preferably, an upper mold is fixed to the lower end of the mounting member by bolts.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Through the ejection mechanism, the spring will push the movable block to reset during its own elongation and reset, and the connecting rod will push the ejection plate to move, so that the workpiece formed in the lower mold can be pushed out. During the movement, the scraper can scrape off the impurities on the inner wall of the lower mold, which is conducive to the next stamping process;

[0017] 2. The hydraulic cylinder is used to drive the mounting part to move vertically, thereby driving the upper mold to move and stamping the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 3 This is a cross-sectional structural view of the mold base of the utility model;

[0022] Figure 4 This is a cross-sectional structural view of the mounting member of the utility model.

[0023] Description of reference numerals:

[0024] 1. Mold base; 2. Lower mold; 3. Molding cavity; 4. Fixed block; 41. Movable rod; 42. Spring; 43. Movable block; 44. Fixed rod; 45. Mounting plate; 46. Fixed plate; 47. Guide rod; 48. Connecting rod; 49. Ejector plate; 410. Limit plate; 411. Scraper strip; 5. Fixed frame; 6. Ejector plate; 7. Hydraulic cylinder; 8. Mounting piece; 9. Positioning tube; 10. Upper mold. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution:

[0027] See also Figures 1 to 4 A precision mechanical parts processing mold comprises a mold base 1, a lower mold 2 is fixed to the upper surface of the mold base 1 by bolts, a molding cavity 3 is provided inside the lower mold 2, and an ejection mechanism for assisting the removal of a workpiece is symmetrically installed on the upper end of the mold base 1;

[0028] The ejection mechanism includes a fixed block 4, which is provided with four fixed blocks 4. The four fixed blocks 4 are all fixed to the upper end of the mold base 1. A movable rod 41 is penetrated inside the four fixed blocks 4. The outer surface of the movable rod 41 is sleeved with a spring 42 abutting and connected to the fixed block 4. The upper surface of the spring 42 is abutted and connected with a movable block 43. The upper surface of the movable block 43 is fixed with a fixed rod 44. The lower end of the movable rod 41 penetrates the inner wall of the mold base 1 and is fixed with a mounting plate 45. The inner wall of the mounting plate 45 is fixed with two fixed plates 46. The upper ends of the two fixed plates 46 are fixed with connecting rods 48. The upper ends of the connecting rods 48 penetrate the mold base 1 and are fixed with ejection plates 49. The interiors of the two fixed plates 46 are penetrated with guide rods 47 fixedly connected to the mold base 1. A limit plate 410 is fixed in the horizontal direction inside the lower mold 2. The outer wall of the ejection plate 49 is fixed with a scraper strip 411 that fits tightly with the inner wall of the lower mold 2.

[0029] By adopting the above technical solution, before using the precision mechanical parts to process the mold, the mold base 1 is first placed in a suitable position. When processing the workpiece, the workpiece is placed in the molding cavity 3 in the lower mold 2, and when stamping, the movable block 43 pushes the spring 42 to compress. At this time, under the action of the fixed block 4, the movable rod 41 is driven by the movable block 43 to move vertically, thereby synchronously driving the mounting plate 45 to move, and the fixed plate 46 drives the connecting rod 48 to move, so that the lower surface of the ejector plate 49 is in contact with the upper surface of the limit plate 410. The set limit plate 410 can play a limiting role to prevent the ejector plate 49 from falling too much. At this time, the workpiece inside the lower mold 2 is affected by the upper mold The upper die 10 is extruded to perform stamping. After the workpiece is formed, the hydraulic cylinder 7 drives the upper die 10 to reset, and the positioning tube 9 is separated from the fixed rod 44. In the process of the spring 42 extending and resetting itself, the movable block 43 is pushed to reset, so that the movable rod 41 drives the fixed plate 46 to move. The guide rod 47 provided can guide the fixed plate 46, so that the connecting rod 48 pushes the ejection plate 49 to move, and the workpiece formed in the lower die 2 is pushed out to the outside, realizing the effect of automatic ejection, which is convenient for material removal. The scraper 411 provided on the ejector plate 49 can scrape off impurities on the inner wall of the lower die 2 during movement, which is beneficial for the next stamping process.

[0030] Specifically, Figure 1-Figure 4 As shown, fixing frames 5 are fixed in the vertical direction at both ends of the mold base 1, a top plate 6 is fixed at the upper end of the fixing frames 5, four hydraulic cylinders 7 are fixed to the upper surface of the top plate 6 by bolts, the telescopic ends of the four hydraulic cylinders 7 pass through the top plate 6 and are fixed with mounting parts 8, four positioning tubes 9 plug-in connected to the fixing rod 44 are symmetrically fixed to the lower surface of the mounting part 8, and an upper mold 10 is fixed to the lower end of the mounting part 8 by bolts.

[0031] By adopting the above technical solution, the strength of the top plate 6 can be ensured by setting the fixing frame 5, and the hydraulic cylinder 7 arranged on the top plate 6 drives the mounting part 8 to move vertically, thereby driving the upper mold 10 to move toward the lower mold 2, and the workpiece inside the lower mold 2 is stamped and formed. The positioning tube 9 arranged on the upper mold 10 is connected with the fixing rod 44, so that the fixing rod 44 is inserted into the positioning tube 9, which plays a certain positioning role, and the continued movement of the positioning tube 9 will drive the movable block 43 to move.

[0032] Working principle: Place the workpiece into the forming cavity 3 in the lower mold 2. The strength of the top plate 6 can be ensured by setting the fixing frame 5. The hydraulic cylinder 7 drives the mounting part 8 to move vertically, drives the upper mold 10 to move toward the lower mold 2, and performs stamping and forming on the workpiece inside the lower mold 2. The movable block 43 pushes the spring 42 to compress. At this time, under the action of the fixing block 4, the movable rod 41 is driven by the movable block 43 to move vertically, thereby synchronously driving the mounting plate 45 to move, and the fixing plate 46 drives the connecting rod 48 to move, so that the lower surface of the ejection plate 49 contacts the upper surface of the limit plate 410, and the limit plate 410 can play a role in limiting. , to prevent the ejector plate 49 from falling too much, the workpiece inside the lower mold 2 is squeezed by the upper mold 10, thereby performing stamping and forming, the hydraulic cylinder 7 drives the upper mold 10 to reset, the positioning tube 9 is separated from the fixed rod 44, and in the process of the spring 42 itself extending and resetting, it will push the movable block 43 to reset, so that the movable rod 41 drives the fixed plate 46 to move, and the guide rod 47 provided can guide the fixed plate 46, so that the connecting rod 48 pushes the ejector plate 49 to move, and the workpiece formed in the lower mold 2 is pushed out, and the scraper bar 411 provided on the ejector plate 49 can scrape off impurities on the inner wall of the lower mold 2 during movement.

[0033] 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 aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A precision mechanical parts processing mold, comprising a mold base (1), characterized in that: A lower mold (2) is fixed to the upper surface of the mold base (1) by bolts, a molding cavity (3) is provided inside the lower mold (2), and an ejection mechanism for assisting in removing a workpiece is symmetrically mounted on the upper end of the mold base (1); The ejection mechanism comprises a fixed block (4), wherein four fixed blocks (4) are provided, and the four fixed blocks (4) are all fixed to the upper end of the mold base (1); a movable rod (41) is passed through the inside of the four fixed blocks (4); a spring (42) is sleeved on the outer surface of the movable rod (41) and is abutted and connected with the fixed block (4); the upper surface of the spring (42) is abutted and connected with a movable block (43); the upper surface of the movable block (43) is fixed with a fixed rod (44); the lower end of the movable rod (41) passes through the inner wall of the mold base (1) and is fixed with a mounting plate (45); the inner wall of the mounting plate (45) is fixed with two fixed plates (46); the upper ends of the two fixed plates (46) are fixed with connecting rods (48); the upper ends of the connecting rods (48) pass through the mold base (1) and are fixed with an ejection plate (49).

2. A precision mechanical parts processing mold according to claim 1, characterized in that: A guide rod (47) fixedly connected to the mold base (1) passes through the interior of the two fixing plates (46).

3. A precision mechanical parts processing mold according to claim 1, characterized in that: A limit plate (410) is fixed in the horizontal direction inside the lower mold (2), and a scraper strip (411) that fits tightly against the inner wall of the lower mold (2) is fixed on the outer wall of the ejection plate (49).

4. A precision mechanical parts processing mold according to claim 1, characterized in that: Fixed frames (5) are fixed in the vertical direction at both ends of the mold base (1), and a top plate (6) is fixed at the upper end of the fixed frame (5).

5. A precision mechanical parts processing mold according to claim 4, characterized in that: Four hydraulic cylinders (7) are fixed to the upper surface of the top plate (6) by means of bolts, and the telescopic ends of the four hydraulic cylinders (7) all penetrate the top plate (6) and are fixed with mounting parts (8).

6. A precision mechanical parts processing mold according to claim 5, characterized in that: Four positioning tubes (9) plug-connected to the fixing rods (44) are symmetrically fixed on the lower surface of the mounting member (8).

7. A precision mechanical parts processing mold according to claim 5, characterized in that: The lower end of the mounting member (8) is fixed with an upper mold (10) via bolts.

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