A machine head structure facilitating mold change

Abstract

The application discloses a machine head structure convenient for die replacement, which makes the replacement of different models of product dies fast and efficient, makes the separation of products fast and reliable, and reduces the labor cost. The machine head structure comprises a fixing frame for fixing the machine head structure to a production line, the fixing frame comprising an upper fixing plate, a center installation cavity, and an upper bearing and a lower bearing, an upper outer ring of the center installation cavity being provided with the upper bearing, and a lower outer ring of the center installation cavity being provided with the lower bearing; a transmission gear assembly comprising a shaft sleeve and a transmission gear, the transmission gear being fixed to an upper outer periphery of the shaft sleeve; a hollow assembly shaft comprising a shaft body, a bottom stop side protrusion, and a supporting ring, a top outer periphery of the shaft body being an external thread structure, a center inner cavity of the shaft body being an upper-large-lower-small cavity, the cavity comprising an upper large-diameter cavity and a lower small-diameter cavity, and a bottom outer periphery of the shaft body being provided with the bottom stop side protrusion, the bottom stop side protrusion being used for positioning a die; a stop cover; a pushing needle; and a linear guide spring.

Description

Technical Field

[0001] This invention relates to the technical field of small round can body processing, specifically a machine head structure that facilitates mold changing. Background Technology

[0002] When manufacturing small round cans, after assembling the can body and bottom cover, the outer circumference of the bottom needs to be machined to form the corresponding shape. Different mold structures are required for can bodies of different diameters. In practice, the existing mold replacement structure is complicated, requiring the disassembly and assembly of multiple sets of parts. This causes a long delay in mold replacement time when switching product models on the production line. Furthermore, after the existing mold is assembled, the processed products need to be manually detached, which consumes a lot of labor costs. Therefore, there is an urgent need to develop a machine head structure that facilitates mold replacement. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a machine head structure that facilitates mold changing, enabling quick and efficient replacement of molds for different product models, and ensuring rapid and reliable product removal while reducing labor costs.

[0004] A machine head structure for convenient mold changing, characterized in that it comprises:

[0005] A mounting frame for mounting the head structure to the production line includes an upper mounting plate, a central mounting cavity, an upper bearing, and a lower bearing. The upper bearing is provided on the upper outer ring of the central mounting cavity, and the lower bearing is provided on the lower outer ring of the central mounting cavity.

[0006] A transmission gear assembly includes a bushing and a transmission gear, wherein the transmission gear is fixed to the upper outer periphery of the bushing;

[0007] A hollow assembly shaft includes a shaft body, a bottom stop side protrusion, and a support ring. The upper outer periphery of the shaft body has an external thread structure. The central inner cavity of the shaft body is a cavity that is larger at the top and smaller at the bottom, including a large-diameter cavity at the top and a small-diameter cavity at the bottom. A bottom stop side protrusion is provided on the lower outer periphery of the shaft body. The bottom stop side protrusion is used to position the mold.

[0008] A stop cover includes an upper end plate and an outer ring sleeve. The upper end plate is provided with a central hole, and the inner circumference of the outer ring sleeve is provided with an internal thread.

[0009] The pusher pin includes a top convex end, an upper large-diameter end, and a middle and lower small-diameter end;

[0010] And linear guide springs;

[0011] The stop cover, transmission gear assembly, and fixed frame are stacked sequentially from top to bottom. A support ring is fitted above the bottom of the shaft. The shaft passes through the central mounting cavity and the inner cavity of the bushing from bottom to top and is threaded to the inner thread of the outer ring. The upper part of the support ring is in close contact with the inner ring of the lower bearing. A linear guide spring is fitted at the lower small diameter end. The push pin is located in the central inner cavity of the shaft. The linear guide spring is located in the large diameter cavity. The lower part of the linear guide spring is mounted on the lower wall of the large diameter cavity, and the upper part of the linear guide spring is mounted on the lower surface of the upper large diameter end. When the linear guide spring is not compressed, the upper surface of the upper large diameter end is in contact with the lower surface of the upper end plate, and the top convex end protrudes from the central hole. The lower surface of the support ring is used to press and attach the upper surface of the mounting mold.

[0012] Its further features are:

[0013] The outer periphery of the upper fixing plate is provided with several sets of long slots to ensure convenient and quick assembly with the production line.

[0014] The bottom of the outer ring sleeve is a side-convex fitting outer ring, and the lower surface of the fitting outer ring is in close contact with the center surface of the transmission gear to ensure a stable and reliable press-fit connection.

[0015] The lower end of the bushing is press-fitted into the inner ring of the upper bearing to ensure reliable and stable assembly and stable installation of the mounting frame;

[0016] The lower end of the shaft is provided with an external thread, and the support ring is a nut structure. The support ring is threaded to the external thread, so that the height space for assembling the mold can be finely adjusted.

[0017] The bushing is provided with a locking hole, and the outer ring of the shaft is provided with a vertically arranged long slot at the corresponding position. The locking screw passes through the locking hole and is built into the corresponding height of the long slot, which ensures the synchronous rotation of the bushing and the shaft. The long slot also ensures that the entire structure can still operate reliably when vertical adjustment occurs.

[0018] The upper large-diameter end and the large-diameter cavity are fitted together to ensure the stable and reliable linear movement of the pusher needle.

[0019] With this invention, when the mold needs to be changed, unscrew the stop cover, then pull out the hollow assembly shaft and push pin downwards, remove the mold, then assemble the new mold, insert the hollow assembly shaft and push pin again, and then tighten the stop cover. When the product needs to be unloaded, the top protruding end of the push pin is pushed by external force (usually automated power), and then the small diameter end of the middle and lower part of the push pin protrudes downwards from the shaft body, pushing the product out of the mold. This makes the replacement of molds for different models of products quick and efficient, and makes the product removal quick and reliable, reducing labor costs. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention;

[0021] Figure 2 This is a top view of the present invention;

[0022] Figure 3 for Figure 2 A schematic diagram of the AA cross-section structure (the mold has been assembled in place);

[0023] The names corresponding to the serial numbers in the diagram are as follows:

[0024] Fixed frame 10, upper fixed plate 11, first long slot 111, center mounting cavity 12, upper bearing 13, lower bearing 14, transmission gear assembly 20, bushing 21, transmission gear 22, hollow assembly shaft 30, shaft body 31, second long slot 311, bottom stop side protrusion 32, support ring 33, large diameter cavity 34, small diameter cavity 35, stop cover 40, upper end plate 41, center hole 411, outer ring sleeve 42, fitting outer ring 421, push pin 50, top outward protrusion end 51, upper large diameter end 52, middle and lower small diameter end 53, linear guide spring 60, mold 70, locking screw 80. Detailed Implementation

[0025] A machine head structure for easy mold changing, see Figures 1-3 It includes a fixed frame 10, a transmission gear assembly 20, a hollow assembly shaft 30, a stop cover 40, a pusher pin 50, and a linear guide spring 60.

[0026] The mounting frame 10 is used to mount the machine head structure to the production line. The mounting frame 10 includes an upper mounting plate 11, a central mounting cavity 12, an upper bearing 13, and a lower bearing 14. The upper outer ring of the central mounting cavity 12 is provided with an upper bearing 13, and the lower outer ring of the central mounting cavity 12 is provided with a lower bearing 14. In specific implementation, the four corners of the long side of the upper mounting plate are respectively provided with horizontal first long slot holes 111 to ensure convenient and quick assembly with the production line.

[0027] The transmission gear assembly 20 includes a bushing 21 and a transmission gear 22, with the transmission gear fixed to the upper outer periphery of the bushing 21.

[0028] The hollow assembly shaft 30 includes a shaft body 31, a bottom stop side protrusion 32, and a support ring 33. The upper outer periphery of the top of the shaft body 31 has an external thread structure. The central inner cavity of the shaft body 31 is a cavity that is larger at the top and smaller at the bottom, including a large-diameter cavity 34 at the top and a small-diameter cavity 35 at the bottom. The bottom outer periphery of the shaft body 31 is provided with a bottom stop side protrusion 32, which is used to position the mold 70.

[0029] The stop cover 40 includes an upper end plate 41 and an outer ring sleeve 42. The upper end plate 41 is provided with a central hole 411, and the inner circumference of the outer ring sleeve 42 is provided with an internal thread. In a specific embodiment, the bottom of the outer ring sleeve 42 of the stop cover is a side-convex fitting outer ring 421. The lower surface of the fitting outer ring 421 is in close contact with the center surface of the transmission gear 22 to ensure a stable and reliable press-fit connection. In a preferred embodiment, the stop cover 40 is a specially made locking nut structure, which ensures a stable and reliable threaded connection.

[0030] The pusher pin 50 includes a top convex end 51, an upper large-diameter end 52, and a middle and lower small-diameter end 53;

[0031] The stop cover 40, transmission gear assembly 20, and fixed frame 10 are stacked sequentially from top to bottom. A support ring 33 is sleeved on the bottom of the shaft 31. The shaft 31 passes through the inner cavity of the central mounting cavity 12 and the inner cavity of the bushing 21 from bottom to top and is then threaded to the inner thread of the outer ring 42. The outer wall of the shaft 31 is fitted with the inner rings of the upper bearing 13 and the lower bearing 14.

[0032] The upper part of the support ring 33 is in close contact with the inner ring of the lower bearing 14. The lower small diameter end 53 is fitted with a linear guide spring 60. The pusher pin 50 is located in the central cavity of the shaft body 31. The linear guide spring 60 is located in the large diameter cavity 34. The lower part of the linear guide spring 60 is mounted on the lower wall of the large diameter cavity 34, and the upper part of the linear guide spring 60 is mounted on the lower surface of the upper large diameter end 52. When the linear guide spring 60 is not compressed, the upper surface of the upper large diameter end 52 is in contact with the lower surface of the upper end plate 41, and the top convex end 51 protrudes from the central hole 411. The lower surface of the support ring 33 is used to press and attach the upper surface of the mounting mold 70.

[0033] In practice,

[0034] The lower end of the bushing 21 is press-fitted onto the inner ring of the upper bearing 13 to ensure reliable and stable assembly and secure and stable installation of the mounting frame 10;

[0035] The lower end of the shaft 31 is provided with an external thread, and the support ring 33 is a nut structure. The support ring 33 is threaded to the external thread at the lower end of the shaft 31, so that the height space for assembling the mold 70 can be finely adjusted.

[0036] The bushing 21 is provided with a locking hole, and the outer ring of the shaft body 31 is provided with a vertically arranged second long slot 311. The locking screw 80 passes through the locking hole and its head is built into the corresponding height of the second long slot 311. This ensures the synchronous rotation of the bushing 21 and the shaft body 31. The setting of the second long slot 311 ensures that the entire structure can still operate reliably when vertical adjustment occurs.

[0037] In practice, the upper large-diameter end 52 and the large-diameter cavity 34 are fitted with a clearance to ensure the stable and reliable linear movement of the pusher needle.

[0038] Its working principle is as follows: When it is necessary to change the mold, first unscrew the locking screw 80, then unscrew the stop cover 40, then pull out the hollow assembly shaft 30 and the push pin 50 downwards, remove the mold 70, then assemble the new mold 70, insert the hollow assembly shaft 30 and the push pin 50 again, and then tighten the stop cover 40 and the locking screw 80; when it is necessary to unload the product, the top protruding end 51 of the push pin 50 is pushed outward by external force (usually automated power), and then the small diameter end 53 of the middle and lower part of the push pin 50 protrudes downwards from the shaft 31, pushing the product out of the mold 70; this makes the replacement of molds for different models of products fast and efficient, and makes the product release fast and reliable, reducing labor costs.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A machine head structure for convenient mold changing, characterized in that, It includes: A mounting frame for mounting the head structure to the production line includes an upper mounting plate, a central mounting cavity, an upper bearing, and a lower bearing. The upper bearing is provided on the upper outer ring of the central mounting cavity, and the lower bearing is provided on the lower outer ring of the central mounting cavity. A transmission gear assembly includes a bushing and a transmission gear, wherein the transmission gear is fixed to the upper outer periphery of the bushing; A hollow assembly shaft includes a shaft body, a bottom stop side protrusion, and a support ring. The upper outer periphery of the shaft body has an external thread structure. The central inner cavity of the shaft body is a cavity that is larger at the top and smaller at the bottom, including a large-diameter cavity at the top and a small-diameter cavity at the bottom. A bottom stop side protrusion is provided on the lower outer periphery of the shaft body. The bottom stop side protrusion is used to position the mold. A stop cover includes an upper end plate and an outer ring sleeve. The upper end plate is provided with a central hole, and the inner circumference of the outer ring sleeve is provided with an internal thread. The pusher pin includes a top convex end, an upper large-diameter end, and a middle and lower small-diameter end; And linear guide springs; The stop cover, transmission gear assembly, and fixed frame are stacked sequentially from top to bottom. A support ring is fitted above the bottom of the shaft. The shaft passes through the central mounting cavity and the inner cavity of the bushing from bottom to top and is threaded to the inner thread of the outer ring. The upper part of the support ring is close to the inner ring of the lower bearing. A linear guide spring is fitted at the lower small diameter end. The push pin is located in the central inner cavity of the shaft. The linear guide spring is located in the large diameter cavity. The lower part of the linear guide spring is mounted on the lower wall of the large diameter cavity, and the upper part of the linear guide spring is mounted on the lower surface of the upper large diameter end. When the linear guide spring is not compressed, the upper surface of the upper large diameter end is in contact with the lower surface of the upper end plate, and the top convex end protrudes from the central hole. The lower surface of the support ring is used to press the upper surface of the mounting mold. The bushing is provided with a locking hole, and the outer ring of the shaft is provided with a vertically arranged elongated slot at a corresponding position. The locking screw passes through the locking hole and is installed at the corresponding height of the elongated slot. When it is necessary to change the mold, first unscrew the locking screw, then unscrew the stop cover, then pull out the hollow assembly shaft and push pin downwards, remove the mold, then assemble the new mold, insert the hollow assembly shaft and push pin again, and then tighten the stop cover and locking screw; when it is necessary to unload the product, push the top protruding end of the push pin with external force, and then the small diameter end of the middle and lower part of the push pin protrudes downwards from the shaft body, pushing the product out of the mold.

2. The head structure for convenient mold changing according to claim 1, characterized in that: The outer periphery of the upper mounting plate is provided with several sets of long slots.

3. The head structure for convenient mold changing according to claim 1, characterized in that: The bottom of the outer ring sleeve is a side-convex fitting outer ring, and the lower surface of the fitting outer ring is in close contact with the center surface of the transmission gear.

4. The head structure for convenient mold changing according to claim 1, characterized in that: The lower end of the bushing is press-fitted into the inner ring of the upper bearing.

5. The head structure for convenient mold changing according to claim 1, characterized in that: The lower end of the shaft is provided with an external thread, and the support ring is a nut structure, with the support ring threadedly connected to the external thread.

6. The head structure for convenient mold changing according to claim 1, characterized in that: The upper large-diameter end and the large-diameter cavity are fitted with a clearance.

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