Part cutting tool

Abstract

The utility model relates to a part cutting tool and relates to the technical field of machining, the part cutting tool comprises an upper template and a lower bottom plate, the upper template is provided with a part groove which is provided with an upward opening and used for placing a part, a pressing part used for pressing flash on the peripheral side of the part is arranged above the upper template, and a cutting hole is formed in the position, located at the bottom of the part groove, of the upper template in a penetrating mode; a blade matched with the cutting hole in an inserted mode is arranged on the lower bottom plate. The pressing part above the upper die plate is used for pressing flashes remaining on the periphery of a part, the part and the upper die plate are integrally pressed downwards, the blade is made to cut from bottom to top, and the part which is just subjected to thermoplastic forming has viscidity and will adhere to a part groove of the upper die plate; the space above the part groove is used for effectively avoiding the upward punching blade, that is, the situation that the blade needs to be in contact with an operation table top during downward punching in a traditional mode is effectively avoided, so that damage to the blade is reduced, adhesion between the part and the upper die plate is reduced, and the cutting efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of machining, and particularly relates to a part cutting tooling. Background Art

[0002] Currently, the main method for the thermal manufacturing of plastic parts is to preheat thermoplastic plastics and inject them into a mold, where they cool and solidify to form the required plastic parts. At the same time, the plastic parts need to be cut after molding.

[0003] The traditional method for cutting hot plastic parts is to place the hot plastic part to be cut in the mold cavity of the lower mold, place the lower mold on the operating table, then install a knife plate with multiple blades on the lower mold, and use a pressing instrument to press the knife plate to cut the part. Then, in order to ensure that the part is cut off, usually the traveling distance of the blade is greater than the placement position of the part. Therefore, the lower mold needs to be provided with avoidance grooves for avoiding the blades in each mold cavity.

[0004] However, each time when stamping and cutting downward, since the depth of the avoidance groove is very small, in order to ensure that the part is completely cut off, the blades on the knife plate generally penetrate through the lower mold completely, so that the blades on the knife plate touch the operating table, resulting in a reduction in the sharpness of the blades and damage to the blades. Summary of the Utility Model

[0005] In order to solve the problem of blade damage in the background art, this application provides a part cutting tooling.

[0006] A part cutting tooling provided by this application adopts the following technical solutions:

[0007] A part cutting tooling includes an upper template and a lower base plate. An upward-opening part groove for placing a part is provided on the upper template. A pressing part for pressing the flash on the periphery of the part is arranged above the upper template. A cutting hole is provided through the bottom of the part groove on the upper template. A blade inserted and matched with the cutting hole is arranged on the lower base plate.

[0008] By adopting the above technical solutions, the flash remaining on the periphery of the part is pressed by the pressing part above the upper template, and the part and the upper template can be pressed downward as a whole, so that the blade cuts from bottom to top. Moreover, the just thermoformed part is still sticky and will adhere to the part groove of the upper template. The space above the part groove is used to effectively avoid the upward punching blade, that is, it effectively avoids the damage of the blade caused by the downward punching of the blade touching the operating table in the traditional method, and reduces the adhesion between the part and the upper template, improving the cutting efficiency.

[0009] Preferably, a guiding member for guiding the cutting hole to cooperate with the blade and a reset member for resetting the upper template are provided between the upper template and the lower base plate. The guiding member is fixedly connected to the lower base plate and movably connected to the upper template, and the reset member is arranged on the guiding member.

[0010] By adopting the above technical solution, by using the reset member and the guiding member, the cutting can be more accurate and it is convenient to reset after cutting, so that the next cutting can be carried out faster.

[0011] Preferably, the guiding member is set as a bolt, a threaded hole is provided on the lower base plate, and the bolt passes through the upper template and is threadedly connected to the threaded hole on the lower base plate.

[0012] By adopting the above technical solution, through the guiding action of the bolt, the accurate alignment between the upper template and the lower base plate is ensured, thereby improving the cutting accuracy.

[0013] Preferably, a reset spring is sleeved on the bolt, one end of the reset spring abuts against the upper template, and the other end abuts against the lower base plate.

[0014] By adopting the above technical solution, the setting of the reset spring enables the upper template to automatically reset after cutting, improving the convenience and efficiency of operation. This automatic reset function greatly reduces the manual reset work of the operator and improves the work efficiency.

[0015] Preferably, a counterbore for the tail of the bolt to pass through is provided on the upper template. When the upper template presses down to cut the part, the head of the bolt is entirely located within the counterbore.

[0016] By adopting the above technical solution, the head of the bolt is entirely located within the counterbore. When the upper template resets, it will not be affected by the head of the bolt, and the bolt can better play a guiding role.

[0017] Preferably, a handle for easy taking is further provided on the upper template.

[0018] By adopting the above technical solution, the design of the handle enables the operator to hold and move the upper template more conveniently, improving the comfort and safety of operation.

[0019] Preferably, a positioning rod is further provided on the lower base plate, and a positioning hole cooperating with the positioning rod is provided on the upper template.

[0020] By adopting the above technical solution, the cooperation between the positioning rod and the positioning hole further improves the positioning accuracy between the upper template and the lower base plate.

[0021] Preferably, the lower base plate is detachably connected to the blade.

[0022] By adopting the above technical solution, the blade can be conveniently replaced after wear or damage, reducing the maintenance cost; the detachable design not only facilitates the replacement of the blade but also extends the service life of the tooling.

[0023] Preferably, an installation groove for installing the blade is formed on the lower base plate, and an interference fit is formed between the installation groove and the blade.

[0024] By adopting the above technical solution, the interference fit ensures the stability of the blade installation and prevents the blade from loosening or falling off during the cutting process. This stable installation method enhances the safety and reliability of the tooling.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Since the blade is arranged on the lower base plate and the upper template presses down for cutting, the adhesion between the part and the upper template is reduced, facilitating the removal of the part; the contact between the blade and the part groove in the traditional method is effectively avoided, thereby reducing the damage of the blade, increasing the service life of the blade, and further reducing the maintenance cost.

[0027] 2. The double-positioning design of the positioning rod and the positioning hole and the guiding function of the bolt together improve the cutting accuracy and the stability of the tooling, ensuring the processing quality of the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an exploded schematic view of the overall structure in the embodiment of the present application;

[0029] Figure 2 is a schematic view of the overall structure of the upper template and the lower base plate in the embodiment of the present application;

[0030] Figure 3 is a schematic view of the structure of the upper template in the embodiment of the present application;

[0031] Figure 4 is a schematic view of the structure of the lower base plate in the embodiment of the present application.

[0032] Reference numerals: 1, upper template; 11, part groove; 12, cutting hole; 13, counterbore; 14, handle; 15, positioning hole; 2, lower base plate; 21, blade; 22, threaded hole; 23, positioning rod; 24, installation groove; 3, guiding member; 4, reset member; 5, pressing portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following will further describe the present application in detail with reference to the Figure 1 - attached Figure 4 drawings.

[0034] An embodiment of the present application discloses a part cutting tooling.

[0035] Referring to Figure 1 and Figure 2 , a part cutting tooling fixture, comprising an upper template 1 and a lower base plate 2 located below the upper template 1; a part slot 11 for placing a part is formed on the upper template 1, a cutting hole 12 is provided at the bottom of the part slot 11, and a blade 21 matching with the cutting hole 12 is arranged on the lower base plate 2 for cutting the part from bottom to top. A guiding member 3 and a resetting member 4 are arranged between the upper template 1 and the lower base plate 2. The guiding member 3 is fixedly connected to the lower base plate 2 and movably connected to the upper template 1. The resetting member 4 is arranged on the guiding member 3. The guiding member 3 is used for guiding the cooperation of the cutting hole 12 and the blade 21, and the resetting member 4 is used for resetting the upper template 1. A pressing portion 5 for pressing the peripheral flash of the part is arranged above the part slot 11, and the pressing portion 5 is pressed by an external driving source, so as to be able to press the part and the upper template 1 downward.

[0036] In actual use, the pressing portion 5 presses the flash of the part and the upper surface of the upper template 1 downward through an external driving source, so that the blade 21 on the lower base plate 2 passes through the cutting hole 12 to cut the part. Since the space above the part slot 11 of the upper template 1 is vacant, the blade 21 can be effectively avoided, thereby reducing the damage of the blade 21, and the upward cutting of the blade 21 can effectively reduce the adhesion of the just thermoplastically formed part to the upper template 1.

[0037] Referring to Figure 1 and Figure 3 , the guiding member 3 is set as a bolt, a threaded hole 22 is formed on the lower base plate 2, the tail of the bolt passes through the upper template 1 and is threadedly connected with the threaded hole 22 on the lower base plate 2. The guiding function of the bolt ensures the accurate alignment between the upper template 1 and the lower base plate 2 and improves the cutting accuracy.

[0038] Referring to Figure 1 , the resetting member 4 is set as a reset spring, the reset spring is sleeved on the bolt, one end abuts against the upper template 1, and the other end abuts against the lower base plate 2. After the upper template 1 is pressed down to complete cutting, the elastic force of the reset spring pushes the upper template 1 to reset, realizing the automatic reset function.

[0039] Referring to Figure 1 and Figure 3 , a counterbore 13 for the tail of the bolt to pass through is machined on the upper template 1. When the upper template 1 is pressed down to cut the part, the head of the bolt is completely located in the counterbore 13, avoiding the head of the bolt from hindering the reset of the upper template 1.

[0040] Referring to Figure 3 , in order to improve the operation convenience, a handle 14 for easy taking is further installed on the upper template 1. The operator can conveniently move and hold the upper template 1 through the handle 14, improving the operation efficiency.

[0041] Reference Figure 1 In order to further improve the positioning accuracy, a positioning rod 23 is vertically welded on the lower base plate 2, and a positioning hole 15 matching with the positioning rod 23 is machined on the upper template 1. The cooperation between the positioning rod 23 and the positioning hole 15 ensures the precise positioning between the upper template 1 and the lower base plate 2, so as to accurately position when installing the upper template 1 and improve the cutting accuracy.

[0042] Reference Figure 4 In order to facilitate the replacement and maintenance of the blade 21, the connection method of the blade 21 is further optimized. Specifically, the lower base plate 2 and the blade 21 are detachably connected.

[0043] Reference Figure 4 An installation groove 24 for installing the blade 21 is machined on the lower base plate 2, and an interference fit is formed between the installation groove 24 and the blade 21. This connection method ensures the stability of the installation of the blade 21 and prevents the blade 21 from loosening or falling off during the cutting process.

[0044] Reference Figure 4 When the blade 21 is worn or damaged, the operator can conveniently disassemble and replace the new blade 21, reduce the maintenance cost, and improve the service life of the tooling.

[0045] The implementation principle of the embodiment of the present application is as follows: By changing the traditional cutting method, the original upper knife plate is changed to a lower knife plate, thereby reducing the adhesion between the parts and the upper template 1 and avoiding the damage of the blade 21 during the cutting process; during cutting, the part to be cut is placed in the part groove 11 of the upper template 1, and the upper template 1 and the part are pressed down together through the pressing part 5, and the blade 21 cuts the part from bottom to top through the cutting hole 12; since the upper space is vacant, the blade 21 will not be damaged during the cutting process from bottom to top, extending the service life of the blade 21. After cutting, under the action of the return spring, the upper template 1 automatically resets and is ready for the next cutting. This design not only improves the cutting efficiency but also reduces the maintenance cost.

[0046] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A parts cutting tool, characterized in that: The invention comprises an upper template (1) and a lower base plate (2); the upper template (1) is provided with a part slot (11) which opens upward and is used to place parts; a pressing portion (5) is provided above the upper template (1) for pressing the peripheral flash of the parts; the upper template (1) is provided with a cutting hole (12) extending through the bottom of the part slot (11); and the lower base plate (2) is provided with a blade (21) which is plugged into and matched with the cutting hole (12).

2. A parts cutting tool according to claim 1, characterized in that: A guide member (3) for guiding the cutting hole (12) to cooperate with the blade (21) and a reset member (4) for resetting the upper template (1) are provided between the upper template (1) and the lower base plate (2); the guide member (3) is fixedly connected to the lower base plate (2) and movably connected to the upper template (1); and the reset member (4) is provided on the guide member (3).

3. A parts cutting tool according to claim 2, characterized in that: The guide member (3) is configured as a bolt, a threaded hole (22) is provided on the lower base plate (2), and the bolt passes through the upper template (1) and is threadedly connected to the threaded hole (22) on the lower base plate (2).

4. A parts cutting tool according to claim 3, characterized in that: The reset member (4) is configured as a reset spring, which is sleeved on a bolt, one end of which abuts against the upper template (1), and the other end of which abuts against the lower base plate (2).

5. A parts cutting tool according to claim 3, characterized in that: The upper template (1) is provided with a countersunk hole (13) for the tail of the bolt to pass through, and when the upper template (1) is pressed down to cut the part, the head of the bolt is completely located in the countersunk hole (13).

6. A parts cutting tool according to claim 1, characterized in that: The upper template (1) is also provided with a handle (14) for easy picking.

7. A parts cutting tool according to claim 1, characterized in that: The lower base plate (2) is also provided with a positioning rod (23), and the upper template (1) is provided with a positioning hole (15) that matches the positioning rod (23).

8. A parts cutting tool according to claim 1, characterized in that: The lower base plate (2) is detachably connected to the blade (21).

9. A parts cutting tool according to claim 8, characterized in that: The lower base plate (2) is provided with a mounting groove (24) for mounting the blade (21), and an interference fit is formed between the mounting groove (24) and the blade (21).

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