Locking device used after opening of mould chamber cover of tank stretcher
By designing a special hook structure and limiting mechanism on the mold chamber cover of the tank body stretcher, the automatic locking of the mold chamber cover is achieved, solving the problems of unstable locking and insufficient safety in the prior art, and improving the stability and safety of locking.
Patent Information
- Application Number
- CN202420907820.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-04-28
AI Technical Summary
The opening locking structure of the mold chamber cover of the existing tank stretcher depends on the spring, which is prone to instability and insufficient safety due to spring failure or wear and deformation of the lock core after long-term use.
A locking device after opening the mold chamber cover of the tank stretcher is designed, and a special hook structure is adopted. The root of the hook is hinged with the seat body through a pivot. The hook head is equipped with a hook and an inclined guide surface. Combined with the limiting mechanism and push rod compression spring, the automatic locking of the mold chamber cover is achieved.
Through the self-weight tendency of the hook structure and the coordination of the limiting mechanism, the mold chamber cover is automatically locked in the open state, improving locking stability and safety, and avoiding locking problems caused by spring failure or wear.
Smart Images
Figure CN222554347U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a can stretching machine, in particular to a locking device after a mold chamber cover of the can stretching machine is opened, which is used for locking the mold chamber cover of the can stretching machine in an open state. Background Art
[0002] The can body stretching machine is a device that forms a metal cup into a white can through a mold. After forming, the white can needs to be removed from the punch and then transferred to the next device by the can discharge assembly.
[0003] The mold chamber of the can body stretching machine is used to place and fix the mold package, and the mold chamber cover on it plays the role of pressing the mold package. When replacing or checking the mold package, the mold chamber cover needs to be opened and locked in the open position for easy operation by workers. The existing mold chamber cover opening and locking structure adopts an elastic impact lock, which pushes the lock core through the spring to make the lock tongue extend into the lock hole on the baffle to achieve the locking of the mold chamber cover. However, this structure relies on the locking of the spring. Once the spring fails, the lock block cannot be locked. There will also be problems such as wear and deformation of the lock core and jamming of the unlocking after long-term use.
[0004] Therefore, it is necessary to design a new mold chamber cover locking device to improve locking stability and safety. Summary of the invention
[0005] The utility model aims to provide a locking device for a can body stretching machine mold chamber cover after opening, so as to improve the locking stability and safety.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a locking device for the mold chamber cover of a can body stretching machine after opening, wherein the mold chamber cover is flipped upward to open, and the angle between the cover surface and the horizontal plane is ≤90 degrees in the open state;
[0007] The locking device after the mold chamber cover is opened includes a hook, and the position of the hook corresponding to the open state of the mold chamber cover is set on a seat body fixed relative to the mold chamber cover. Specifically, the root of the hook is hinged to the seat body through a pivot, and the pivot is parallel to the central axis of the flip of the mold chamber cover, so that the center of gravity of the hook is on the head side of the hook compared to the pivot, and the hook has a tendency to rotate downward in a natural state without external force;
[0008] A limiting mechanism acts on the hook to keep the hook at an angle corresponding to the open state of the mold chamber cover; a hook portion is protruding downward on the head of the hook, and a hooking action surface is provided on the root side of the hook portion, and an inclined guide surface is provided on the front side, so that during the opening process of the mold chamber cover, the hook can first slide against the inclined guide surface to automatically cooperate with the mold chamber cover to turn up and hook with the mold chamber cover to reach a locked state.
[0009] In the above scheme, the limiting mechanism is composed of an arc-shaped limiting groove opened on the hook and a limiting column protruding on the seat body, and the limiting column extends into the arc-shaped limiting groove. When the limiting column is located at the end of the arc-shaped limiting groove close to the root side, it corresponds to the locking state of the hook and the mold chamber cover hooking cooperation, and the movement process of the limiting column toward the front end of the arc-shaped limiting groove corresponds to the process of the inclined guide surface of the hook and the mold chamber cover sliding against each other.
[0010] Furthermore, a receiving space is provided from the front end of the hook toward its root, the receiving space being connected to the arc-shaped limiting groove, a push rod and a compression spring are provided in the receiving space, the compression spring acts on the push rod, so that the push rod (25) presses against the limiting column, that is, acts on the hook, thereby increasing the resistance of the hook to flip upward and open.
[0011] In the above solution, the pivot is a screw of equal height threadedly connected to the seat body.
[0012] In the above solution, the limiting column is an equal height screw threadedly connected to the seat body.
[0013] In the above scheme, a locking block is convexly provided on the edge of the mold chamber cover corresponding to the hook, so that the locking block is hooked and matched with the hook.
[0014] The utility model adopts a special hook to lock the open state of the mold chamber cover. When the mold chamber cover is opened, the mold chamber cover first slides against the inclined guide surface of the hook, and the hook overcomes its own weight and slightly turns upward. When the edge of the mold chamber cover passes over the hook portion of the hook, the edge of the mold chamber cover and the hook action surface reach a hook-matched locked state. Due to the dead weight of the hook, the hook always has a tendency to rotate downward, so that the hook action surface must be firmly against the mold chamber cover. Unless the mold cover is held with one hand and the hook is lifted with the other hand, it can be unlocked, thereby ensuring the stability and safety of the locking. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A three-dimensional diagram of an embodiment of the utility model Figure 1 , the figure shows the state where the mold chamber cover is closed;
[0016] Figure 2 A three-dimensional diagram of an embodiment of the utility model Figure 2 , the figure shows the mold chamber cover is open and locked;
[0017] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model;
[0018] Figure 4 It is a cross-sectional perspective schematic diagram of a hook according to an embodiment of the utility model.
[0019] In the above picture:
[0020] 1. Mold chamber cover; 11. Flip center axis; 12. Lock block;
[0021] 2. hook; 21. pivot; 22. hook portion; 221. hook action surface; 222. inclined guide surface; 23. arc-shaped limit groove; 24. accommodating space; 25. push rod; 26. compression spring;
[0022] 3. Seat body; 31. Limiting column. DETAILED DESCRIPTION
[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0024] Example: See Figure 1-4 As shown, a locking device for the mold chamber cover of a can body stretching machine after opening:
[0025] The mold chamber cover 1 is flipped upward to open, and the angle between the cover surface and the horizontal plane is ≤90 degrees in the open state.
[0026] The locking device after the mold chamber cover is opened includes a hook 2, and the hook 2 is arranged on a seat 3 fixed relative to the mold chamber cover 1 at a position corresponding to the open state of the mold chamber cover 1. Specifically, the root of the hook 2 is hinged to the seat 3 through a pivot 21, and the pivot 21 is parallel to the flip center axis 11 of the mold chamber cover 1, so that the center of gravity of the hook 2 is relatively closer to the head side of the hook 2 than the pivot 21, and the hook has a tendency to rotate downward in a natural state without external force.
[0027] The hook 2 is provided with a limiting mechanism to keep the hook 2 at an angle corresponding to the open state of the mold chamber cover. For example, in the present embodiment, the hook 2 is maintained at an inclined state with an acute angle to the horizontal plane as shown in the figure.
[0028] A hook portion 22 is protruding downward from the head of the hook 2, and a hooking action surface 221 is provided on the root side of the hook portion 22, and an inclined guide surface 222 is provided on the front side, so that during the opening process of the mold chamber cover 1, the hook 2 can first be slidably matched with the inclined guide surface 222 to make the hook 2 flip up and automatically hook and cooperate with the mold chamber cover 1 to reach a locked state.
[0029] Preferably, the limiting mechanism is composed of an arc-shaped limiting groove 23 opened on the hook 2 and a limiting column 31 protruding from the seat body 3, and the limiting column 31 extends into the arc-shaped limiting groove 23. When the limiting column 31 is located at the end of the arc-shaped limiting groove 23 close to the root side, it corresponds to the locking state of the hook 2 and the mold chamber cover 1, and the movement process of the limiting column 31 toward the front end of the arc-shaped limiting groove 23 corresponds to the process of the inclined guide surface 222 of the hook 2 and the mold chamber cover 1 being pressed against and slidably matched.
[0030] Furthermore, a accommodating space 24 is provided from the front end of the hook 2 to its root, and the accommodating space 24 is communicated with the arc-shaped limiting groove 23. A push rod 25 and a compression spring 26 are provided in the accommodating space 24. The compression spring 26 acts on the push rod 25, so that the push rod 25 presses against the limiting column 31, which in turn acts on the hook 2, thereby increasing the resistance to opening of the hook 2 and further increasing safety.
[0031] The accommodating space 24 is specifically a long hole opened from the front to the root of the hook 2, the end of the hole is connected to the arc-shaped limiting groove 23, the push rod 25 and the compression spring 26 are arranged in the long hole, and then the two are sealed in the hook 2 by a set screw.
[0032] Specifically, the pivot 21 is a screw of equal height that is threadedly connected to the seat body 3. The limiting column 31 is a screw of equal height that is threadedly connected to the seat body 3.
[0033] Specifically, a locking block 12 is protruded on the edge of the mold chamber cover 1 corresponding to the hook 2 , so that the locking block 12 is hooked and matched with the hook 2 .
[0034] When the mold chamber cover 1 is opened, the locking block 12 of the mold chamber cover 1 first slides against the inclined guide surface 222 of the hook 2, and the hook 2 overcomes its own weight and slightly flips upward. When the locking block 12 of the mold chamber cover 1 passes over the hook portion 22 of the hook 2, the locking block 12 of the mold chamber cover 1 reaches the hooking and locking state with the hooking action surface 221. Due to the dead weight of the hook 2, the hook 2 always has a tendency to rotate downward, so that the hooking action surface 221 must firmly press against the locking block 12 of the mold chamber cover. Unless someone holds the mold cover 1 with one hand and lifts the hook 2 with the other hand, it can be unlocked, which ensures the stability and safety of the locking.
[0035] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A locking device for a can body stretching machine mold chamber cover after opening, characterized in that: The mold chamber cover (1) is flipped upward to open, and when in the open state, the angle between the cover surface and the horizontal plane is ≤90 degrees; The locking device after the mold chamber cover is opened comprises a hook (2), and the hook (2) is arranged on a seat body (3) fixed relative to the mold chamber cover (1) at a position corresponding to the open state of the mold chamber cover (1). Specifically, the root of the hook (2) is hinged to the seat body (3) via a pivot (21), and the pivot (21) is parallel to the turning center axis (11) of the mold chamber cover (1), so that the center of gravity of the hook (2) is closer to the head side of the hook (2) than the pivot (21), and the hook has a tendency to rotate downward in a natural state without external force. A limiting mechanism is provided on the hook (2) so that the hook (2) is maintained at an angle corresponding to the open state of the mold chamber cover; a hook portion (22) is provided on the head of the hook (2) to protrude downwards, and a hooking action surface (221) is provided on the root side of the hook portion (22), and an inclined guide surface (222) is provided on the front side thereof, so that during the opening process of the mold chamber cover (1), the hook (2) can first be slidably matched with the inclined guide surface (222) so that the hook (2) can be turned up and automatically hooked and matched with the mold chamber cover (1) to reach a locked state.
2. The locking device for the mold chamber cover of the can body stretching machine after opening according to claim 1, characterized in that: The limiting mechanism is composed of an arc-shaped limiting groove (23) provided on the hook (2) and a limiting column (31) protruding from the seat body (3); the limiting column (31) extends into the arc-shaped limiting groove (23); when the limiting column (31) is located at the end of the arc-shaped limiting groove (23) close to the root side, it corresponds to a locked state of hooking and matching between the hook (2) and the mold chamber cover (1); and the movement process of the limiting column (31) toward the front end of the arc-shaped limiting groove (23) corresponds to the process of the inclined guide surface (222) of the hook (2) and the mold chamber cover (1) being in abutment and sliding matching.
3. The locking device for the mold chamber cover of the can body stretching machine after opening according to claim 2, characterized in that: A receiving space (24) is provided at the front end of the hook (2) toward its root, the receiving space (24) being in communication with the arc-shaped limiting groove (23), a push rod (25) and a compression spring (26) being provided in the receiving space (24), the compression spring (26) acting on the push rod (25) so that the push rod (25) presses against the limiting column (31), that is, acts on the hook (2), thereby increasing the resistance to opening the hook (2).
4. The locking device for the mold chamber cover of the can body stretching machine after opening according to claim 2, characterized in that: The limiting column (31) is a screw of equal height that is threadedly connected to the seat body (3).
5. The locking device for the mold chamber cover of the can body stretching machine after opening according to claim 1 is characterized in that: The pivot (21) is a screw of equal height that is threadedly connected to the seat body (3).
6. The locking device for the mold chamber cover of the can body stretching machine after opening according to claim 1, characterized in that: A locking block (12) is protrudingly provided on the edge of the mold chamber cover (1) corresponding to the hook (2), so that the locking block (12) and the hook (2) are hooked and matched.