Lower die of plastic-embedded part cutting-off die

Abstract

The utility model discloses a lower die of an embedded plastic part cutting die, which relates to the technical field of the structure of the lower die of the cutting die, and comprises a base and a base plate fixedly arranged on the top surface of the base, and a plurality of sinking grooves respectively corresponding to plate-shaped parts on an embedded plastic part are arranged on the base plate. Each sinking groove corresponds to each plate-shaped part on the plastic embedded part, a groove is formed in the groove bottom of each sinking groove, a bearing seat for receiving the falling plate-shaped parts is fixedly arranged at the groove bottom of each groove, an inclined plane is formed in the top surface of the front end part of each bearing seat, and a spigot is formed in the top surface of the rear end part of each bearing seat; a tool apron is fixedly arranged at the groove bottom of the sinking groove, a wedge-shaped face is arranged at the inner side end of the tool apron, and the wedge-shaped face inclines downwards and faces the inclined face of the bearing base. The device has the beneficial effects that the production quality of the plate-shaped parts is improved, and the production efficiency of the plate-shaped parts is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of the structure of the lower die of a cutting die, in particular to the lower die of an insert molding cutting die. Background Art

[0002] The structure of the insert molding produced by an injection mold is as Figure 1 shown. It includes a main runner 1, sub-runners 2 connected to the left and right sides of the main runner 1, and plate-shaped parts 3 formed by injection molding are connected to the left and right ends of the sub-runners 2 respectively. In order to obtain the plate-shaped parts 3, workers need to use a cutting die to cut the connecting part 4 between the plate-shaped parts 3 and the sub-runners 2. After cutting, the required plate-shaped parts 3 can be obtained. The structure of the plate-shaped parts 3 is as Figure 2 shown.

[0003] Among them, the cutting die includes an upper die and a lower die. Among them, the function of the lower die is to collect the dropped plate-shaped parts 3. The structure of the lower die in the prior art is as Figure 3 shown. It includes a base 5, a backing plate 6 fixedly arranged on the top surface of the base 5. A plurality of sinking grooves 7 corresponding to the respective plate-shaped parts 3 on the insert molding are formed in the backing plate 6, and a groove 8 is formed at the bottom of each sinking groove 7.

[0004] In the workshop, the operation method for workers to obtain the plate-shaped parts 3 is as follows:

[0005] S1. Workers support both the main runner 1 and the sub-runners 2 of the insert molding on the top surface of the backing plate 6, and ensure that the connecting part 4 between the plate-shaped parts 3 and the sub-runners 2 is suspended on the left edge of the sinking groove 7. At this time, the plate-shaped parts 3 are suspended directly above the sinking groove 7, so as to realize the positioning of the insert molding, as Figure 4 shown;

[0006] S2. Control the upper die of the cutting die to move downward. The upper die drives the cutting tool on it to move downward. The cutting tool cuts the connecting part 4 between the plate-shaped parts 3 and the sub-runners 2. After cutting, the plate-shaped parts 3 fall onto the bottom of the groove 8 under their own gravity;

[0007] S3. Workers use tweezers to pick out the plate-shaped parts 3 falling on the bottom of the groove 8 from the groove 8 to obtain the required plate-shaped parts 3.

[0008] However, although this kind of lower die can cooperate with the upper die, there are still the following technical defects in terms of technology:

[0009] I. Since the height of the plate-shaped parts 3 from the bottom of the groove 8 is large, when the connecting part 4 is cut off, the plate-shaped parts 3 directly fall from a high place to the bottom of the groove 8, which will undoubtedly cause damage to the bottom surface of the plate-shaped parts 3, thereby reducing the production quality of the plate-shaped parts.

[0010] II. The plate-shaped part 3 that falls on the bottom of the groove 8 lies flat on the bottom of the groove, making it very difficult for workers to pick out the plate-shaped part 3 from the groove 8 with tweezers, thus further reducing the production efficiency of the plate-shaped part.

[0011] Therefore, there is an urgent need for a lower die that can improve the production quality and production efficiency of plate-shaped parts. Summary of the Utility Model

[0012] The purpose of the present utility model is to overcome the shortcomings of the prior art and provide a lower die of an insert molding cutting die that can improve the production quality and production efficiency of plate-shaped parts.

[0013] The purpose of the present utility model is achieved through the following technical solutions: A lower die of an insert molding cutting die, which includes a base and a backing plate fixedly arranged on the top surface of the base. The backing plate is provided with a plurality of counterbores corresponding to the respective plate-shaped parts on the insert molding. Each counterbore corresponds to the respective plate-shaped part on the insert molding. A groove is provided at the bottom of each counterbore. A receiving seat for receiving the falling plate-shaped part is fixedly arranged at the bottom of the groove. An inclined surface is provided on the top surface of the front end portion of the receiving seat, and the inclined surface is inclined forward. A rabbet is provided on the top surface of the rear end portion of the receiving seat; A tool holder is fixedly arranged at the bottom of the counterbore. A wedge surface is provided on the inner side end of the tool holder, and the wedge surface is inclined downward towards the inclined surface of the receiving seat.

[0014] A clamping groove is provided at the bottom of the counterbore, and the lower end portion of the tool holder is embedded in the clamping groove.

[0015] The top surface of the tool holder is flush with the top surface of the backing plate, and the inner end surface of the tool holder is flush with the inner side wall of the counterbore.

[0016] The depth of the counterbore is less than the depth of the groove.

[0017] A plurality of countersunk holes are provided on the outer edge of the backing plate. The backing plate is fixedly connected to the base through the countersunk holes penetrated by locking screws and threaded connection with the base.

[0018] The present utility model has the following advantages: improving the production quality of plate-shaped parts and improving the production efficiency of plate-shaped parts. Description of the Drawings

[0019] Figure 1 It is a structural schematic diagram of an insert molding;

[0020] Figure 2 It is a structural schematic diagram of a plate-shaped part;

[0021] Figure 3 It is a structural schematic diagram of the prior art lower die;

[0022] Figure 4 Schematic diagram of the positioning of an insert by a mold in the prior art;

[0023] Figure 5 Schematic structural diagram of the present utility model;

[0024] Figure 6 Schematic structural diagram of the receiving seat;

[0025] Figure 7 For Figure 6 Left view;

[0026] Figure 8 Schematic structural diagram of the tool holder;

[0027] Figure 9 Schematic diagram of the present utility model for positioning an insert;

[0028] Figure 10 Schematic diagram of the receiving seat catching a plate-shaped part;

[0029] Figure 11 Physical object of the present utility model Figure One ;

[0030] Figure 12 Physical object of the present utility model Figure Two ;

[0031] Figure 13 Physical object of the present utility model Figure Three ;

[0032] In the figure:

[0033] 1 - main runner, 2 - sub-runner, 3 - plate-shaped part, 4 - connecting part, 5 - base, 6 - backing plate, 7 - sinking groove, 8 - groove, 9 - receiving seat, 10 - inclined surface, 11 - rabbet, 12 - tool holder, 13 - wedge surface, 14 - counterbore. Specific embodiments

[0034] The following further describes the present utility model with reference to the accompanying drawings. The protection scope of the present utility model is not limited to the following:

[0035] As Figures 5 to 8 shown, a lower die of an insert cutting mold includes a base 5 and a backing plate 6 fixedly arranged on the top surface of the base 5. A plurality of sinking grooves 7 corresponding to the respective plate-shaped parts 3 on the insert are formed on the backing plate 6. Each of the sinking grooves 7 corresponds to a respective plate-shaped part 3 on the insert. A groove 8 is formed at the bottom of each sinking groove 7, and the depth of the sinking groove 7 is less than the depth of the groove 8.

[0036] A receiving seat 9 for catching the dropped plate-shaped part 3 is fixedly arranged at the bottom of the groove 8. An inclined surface 10 is formed on the top surface of the front end portion of the receiving seat 9, and the inclined surface 10 is inclined forward. A rabbet 11 is formed on the top surface of the rear end portion of the receiving seat 9; A tool holder 12 is fixedly arranged at the bottom of the counterbore 7. A wedge-shaped surface 13 is formed on the inner end of the tool holder 12, and the wedge-shaped surface 13 is inclined downward and faces the inclined surface 10 of the receiving seat 9.

[0037] A clamping groove is formed at the bottom of the counterbore 7, and the lower end portion of the tool holder 12 is embedded in the clamping groove; The top surface of the tool holder 12 is flush with the top surface of the backing plate 6, and the inner end surface of the tool holder 12 is flush with the inner side wall of the counterbore 7. A plurality of countersunk holes 14 are formed on the outer edge of the backing plate 6. The backing plate 6 is fixedly connected to the base 5 through the countersunk holes 14 by locking screws threaded into the base 5.

[0038] The working process of the utility model is as follows:

[0039] S1. The worker supports the main runner 1 and the sub-runner 2 of the insert molding as shown in Figure 1 on the top surface of the backing plate 6, and ensures that the connecting portion 4 between the plate-shaped part 3 and the sub-runner 2 is suspended on the top surface of the tool holder 12. At this time, the plate-shaped part 3 is suspended directly above the counterbore 7, thereby realizing the positioning of the insert molding, as shown in Figure 9 ;

[0040] S2. Control the upper die of the cutting die to move downward. The upper die drives the cutting tool thereon to move downward. The cutting tool cuts off the connecting portion 4 between the plate-shaped part 3 and the sub-runner 2. After being cut off, the plate-shaped part 3 falls onto the wedge-shaped surface 13 of the tool holder 12 under its own gravity, and then slides along the wedge-shaped surface 13 onto the inclined surface 10 of the receiving seat 9. Thus, the plate-shaped part 3 is caught by the receiving seat 9, as shown in Figure 10 . At this time, the bottom surface of the plate-shaped part 3 is supported on the inclined surface 10 of the receiving seat 9. At the same time, the rear end portion of the plate-shaped part 3 is suspended directly above the rabbet 11 of the receiving seat 9;

[0041] S3. The worker holds the rear end portion of the plate-shaped part 3 with tweezers, and then clamps the plate-shaped part 3 out of the receiving seat 9 to obtain the required plate-shaped part 3. The structure of the plate-shaped part 3 is as shown in Figure 2 ;

[0042] Among them, as can be seen from step S2, after the connecting portion 4 between the plate-shaped part 3 and the sub-runner 2 is cut off, since the plate-shaped part 3 slides from the wedge-shaped surface 13 of the tool holder 12 onto the inclined surface 10 of the receiving seat 9, it effectively avoids the plate-shaped part 3 directly falling from a high place to the bottom of the groove 8. Compared with Figures 3 to 4The lower die shown effectively avoids damage to the bottom surface of the plate-shaped part 3, thereby greatly improving the production efficiency of the plate-shaped part.

[0043] In addition, the rear end of the plate-shaped part 3 is suspended directly above the rabbet 11 of the receiving seat 9, and the plate-shaped part 3 is supported on the inclined surface 10 of the receiving seat 9 in a forward-tilted state, facilitating the worker to directly and quickly pick out the plate-shaped part 3 from the receiving seat 9 with tweezers, thus further improving the production efficiency of the plate-shaped part.

[0044] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The lower die of an insert molding cutting die, characterized in that: It includes a base (5), a backing plate (6) fixedly arranged on the top surface of the base (5). A plurality of counterbores (7) corresponding to respective plate-shaped parts (3) on the insert molding are formed in the backing plate (6). Each of the counterbores (7) corresponds to a respective plate-shaped part (3) on the insert molding. A groove (8) is formed at the bottom of each counterbore (7). A receiving seat (9) for catching the dropped plate-shaped part (3) is fixedly arranged at the bottom of the groove (8). An inclined surface (10) is formed on the top surface of the front end portion of the receiving seat (9), and the inclined surface (10) is inclined forward. A rabbet (11) is formed on the top surface of the rear end portion of the receiving seat (9). A tool holder (12) is fixedly arranged at the bottom of the counterbore (7). A wedge surface (13) is formed on the inner end of the tool holder (12), and the wedge surface (13) is inclined downward towards the inclined surface (10) of the receiving seat (9).

2. The lower die of an insert molding cutting die according to claim 1, characterized in that: A clamping groove is formed at the bottom of the counterbore (7), and the lower end portion of the tool holder (12) is embedded in the clamping groove.

3. The lower die of an insert molding cutting die according to claim 2, characterized in that: The top surface of the tool holder (12) is flush with the top surface of the backing plate (6), and the inner end surface of the tool holder (12) is flush with the inner side wall of the counterbore (7).

4. The lower die of an insert molding cutting die according to claim 3, characterized in that: The depth of the counterbore (7) is less than the depth of the groove (8).

5. The lower die of an insert molding cutting die according to claim 4, characterized in that: A plurality of countersunk holes (14) are formed on the outer edge of the backing plate (6). The backing plate (6) is threadedly connected to the base (5) through the countersunk holes (14) by locking screws to fix the backing plate (6) on the base (5).

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