Punching structure for die-casting die

Abstract

The punching structure comprises an upper die plate and a lower die plate which are oppositely arranged up and down, a die cavity is formed in the left portion of the lower die plate, a punching needle capable of horizontally sliding in the lower die plate is arranged on the side portion of the die cavity, and the first end of the punching needle stretches into the die cavity; the punching needle fixing plate is fixedly arranged at the second end of the punching needle, a sliding block is fixedly connected to the side portion of the punching needle fixing plate, a first guide block in sliding fit with the sliding block is arranged on the upper side of the sliding block, and the first guide block is fixedly connected with an upper die plate; the first guide block pushes the sliding block to move towards the die cavity when moving downwards along with the upper die plate. One end of the spring abuts against the punching needle fixing plate, and the other end of the spring abuts against the lower die plate. The die-casting die punching structure can solve the problems that an existing die-casting die punching structure generally adopts an oil cylinder core-pulling sliding mode or an inclined core-pulling sliding mode to achieve movement of a punching needle, so that the die size is large, and cost is high.

Description

Technical Field

[0001] The utility model relates to the technical field of mold manufacturing, in particular to a punching structure for a die-casting mold. Background Art

[0002] The existing die-casting die punching structure generally uses a cylinder core-pulling sliding or an oblique core-pulling sliding method to achieve the movement of the punch needle. Although these methods are effective, they have some disadvantages. For example, they often require additional space to accommodate the cylinder or oblique pull mechanism, which will increase the overall size of the mold. In addition, these complex mechanical structures will increase the manufacturing cost and maintenance difficulty of the mold. In the field of mold manufacturing, reducing the size and cost of the mold and improving production efficiency have always been the goals pursued by technicians. Therefore, a new punching structure is needed to reduce the size and cost of the mold. Utility Model Content

[0003] The utility model provides a punching structure for a die-casting mold, which can solve the problem that the existing die-casting mold punching structure generally adopts a cylinder core pulling sliding or oblique core pulling sliding method to realize the movement of the punching needle, resulting in a large mold size and high cost.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a punching structure for a die-casting mold, comprising an upper template and a lower template which are arranged relatively to each other, a mold cavity is arranged on the left portion of the lower template, a punch needle which can slide horizontally in the lower template is arranged on the side of the mold cavity, and the first end of the punch needle extends into the mold cavity; a punch needle fixing plate, which is fixedly arranged on the second end of the punch needle, and a slider is fixedly connected to the side of the punch needle fixing plate, and a first guide block which slides with the slider is arranged on the upper side of the slider, and the first guide block is fixedly connected to the upper template, and the first guide block pushes the slider to move toward the mold cavity when the upper template moves downward; a spring, which is sleeved on the outside of the punch needle and has one end abutting against the punch needle fixing plate and the other end abutting against the lower template, with a simple structure and convenient operation.

[0005] Preferably, a second guide block slidably matched with the slider is provided on the lower side of the slider, so that the slider can slide more stably.

[0006] Preferably, the sides of the first guide block and the second guide block are provided with limit baffles, which have a simple structure and are easy to install.

[0007] Preferably, the relative inner sides of the first guide block and the second guide block are both provided with guiding inclined surfaces matched with the sliding block for guiding the left-right movement of the sliding block.

[0008] Preferably, a spring groove for installing the spring is provided at a position of the lower template close to the punch pin fixing plate to facilitate the installation of the spring.

[0009] Preferably, a notch is provided on the right side of the lower template, a connecting fixing plate is provided on the side of the notch, and a through hole for avoiding the punching needle fixing plate is provided in the middle of the connecting fixing plate, which is convenient for processing.

[0010] Preferably, the punching needle is in a step shape, and a mounting groove matching the first guide block is provided on the right portion of the upper template, which is convenient to process and simple to install.

[0011] Preferably, the punch needle is step-shaped, comprising a fixed section connected to the punch needle fixing plate, a transition section is provided on one side of the fixed section, a needle rod is provided on one side of the transition section, and a punching head for punching is provided on one side of the needle rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The structure is simple. By adopting a vertical extrusion mechanical structure, no additional lateral space is required to accommodate the oil cylinder or oblique pull mechanism, thereby significantly reducing the overall size of the mold. Reduced manufacturing costs. Improved production efficiency. Improved punching accuracy and consistency. It can solve the problem that the existing die-casting mold punching structure generally uses the oil cylinder core pull sliding or oblique core pull sliding method to realize the movement of the punch needle, resulting in a large mold size and high cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a main cross-sectional structural diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the installation slot of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the lower template of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the via hole of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the punching needle of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the guiding slope of the utility model.

[0020] Reference numerals:

[0021] 1. Upper template, 2. First guide block, 3. Lower template, 4. Punch needle, 5. Spring, 6. Limit baffle, 7. Slider, 8. Guide block, 10. Punch needle fixing plate, 31. Notch, 32. Cavity, 33. Spring groove, 41. Fixed section, 42. Transition section, 43. Needle rod, 44. Punching head, 9. Connecting fixed plate, 91. Through hole, 11. Mounting groove, 21. Guide slope. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] like Figure 1-6 As shown, the utility model solves the problem that the existing die-casting die punching structure generally adopts the method of oil cylinder core pulling sliding or oblique core pulling sliding to realize the movement of the punch needle, resulting in a large mold size and high cost. The utility model provides the following technical solutions: a punching structure for a die-casting mold, comprising an upper template 1 and a lower template 3 arranged relatively to each other, the left portion of the lower template 3 is provided with a mold cavity 32, the side portion of the mold cavity 32 is provided with a punch needle 4 that can slide horizontally in the lower template 3, and the first end of the punch needle 4 extends into the mold cavity 32; a punch needle fixing plate 10, which is fixedly arranged at the second end of the punch needle 4, and the side portion of the punch needle fixing plate 10 is fixedly connected with a slider 7, and the upper side of the slider 7 is provided with a first guide block 2 that slides with it, and the first guide block 2 is fixedly connected to the upper template 1, and the first guide block 2 pushes the slider 7 to move toward the mold cavity 32 when the upper template 1 moves downward; a spring 5, which is sleeved on the outside of the punch needle 4 and one end of which is against the punch needle fixing plate 10, and the other end of which is against the lower template 3, has a simple structure and is easy to operate.

[0024] In this embodiment, if Figure 1 As shown, a second guide block 8 is provided on the lower side of the slider 7 and is slidably matched with the slider 7, so that the slider 7 can slide more stably.

[0025] In this embodiment, if Figure 1 As shown, the side portions of the first guide block 2 and the second guide block 8 are provided with limit baffles 6, which have a simple structure and are easy to install.

[0026] In this embodiment, if Figure 6 As shown, the relative inner sides of the first guide block 2 and the second guide block 8 are both provided with guiding inclined surfaces 21 adapted to the slider 7 for guiding the left and right movement of the slider.

[0027] In this embodiment, if Figure 3 As shown, the lower template 3 is provided with a spring groove 33 for installing the spring 5 near the punch pin fixing plate 10, so as to facilitate the installation of the spring.

[0028] In this embodiment, if Figure 4 As shown, a notch 31 is provided at the right portion of the lower template 3, a connecting fixing plate 9 is provided at the side of the notch 31, and a through hole 91 for avoiding the punch fixing plate 10 is provided in the middle portion of the connecting fixing plate 9, which is convenient for processing.

[0029] In this embodiment, if Figure 2 As shown, the punching needle is in a step shape, and the right part of the upper template 1 is provided with a mounting groove 11 matching the first guide block 2, which is convenient to process and simple to install.

[0030] In this embodiment, if Figure 5 As shown, the punch needle 4 is step-shaped, and the punch needle 4 includes a fixed section 41 connected to the punch needle fixing plate 10, a transition section 42 is provided on one side of the fixed section 41, a needle rod 43 is provided on one side of the transition section 42, and a punch head 44 for punching is provided on one side of the needle rod 43.

[0031] In this embodiment, if Figure 1 As shown, the operator fixes the first guide block 2 to the right end of the upper mold plate 1, then installs the punch pin fixing plate 10, the slider 7 and the punch pin 4 together accordingly, installs the connecting fixing plate 9 on the side of the notch 31, puts the installed punch pin 4 on the spring 5 and inserts it into the lower mold plate 3, and continues to install the guide block 8 and the limit baffle 6; ensure that the punch pin 4 can slide under the guidance of the first guide block 2 and the guide block 8. When the mold is closed, the upper mold plate 1 and the lower mold plate 3 are closed, and at the same time, under the action of the rebound force of the spring 5 and the extrusion force when closing the mold, the first end of the punch pin 4 extends into the mold cavity 32. When the upper and lower molds are opened, the first guide block 2 retreats, and the spring 5 begins to rebound, driving the slider 7 and the punch pin 4 to retreat, and the punch pin 4 is separated from the mold cavity 32 to take out the product.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A punching structure for a die-casting mold, characterized in that: include: An upper mold plate (1) and a lower mold plate (3) are arranged opposite to each other in the upper and lower parts, a mold cavity (32) is arranged on the left part of the lower mold plate (3), a punching needle (4) which can slide horizontally in the lower mold plate (3) is arranged on the side part of the mold cavity (32), and a first end of the punching needle (4) extends into the mold cavity (32); A punch pin fixing plate (10) is fixedly arranged at the second end of the punch pin (4); a slider (7) is fixedly connected to the side of the punch pin fixing plate (10); a first guide block (2) is provided on the upper side of the slider (7) and is slidably matched with the slider; the first guide block (2) is fixedly connected to the upper mold plate (1); and the first guide block (2) pushes the slider (7) to move toward the mold cavity (32) as the upper mold plate (1) moves downward; The spring (5) is sleeved on the outside of the punching needle (4) and has one end abutting against the punching needle fixing plate (10) and the other end abutting against the lower template (3).

2. The punching structure for a die-casting mold according to claim 1, characterized in that: A second guide block (8) is provided on the lower side of the slide block (7) and is slidably matched with the slide block (7).

3. The punching structure for a die-casting mold according to claim 2, characterized in that: Limiting baffles (6) are provided on the sides of the first guide block (2) and the second guide block (8).

4. The punching structure for a die-casting mold according to claim 2, characterized in that: The first guide block (2) and the second guide block (8) are both provided with guiding inclined surfaces (21) adapted to the sliding block (7) on the opposite inner sides.

5. The punching structure for a die-casting mold according to claim 1, characterized in that: The lower mold plate (3) is provided with a spring groove (33) for installing the spring (5) at a position close to the punch pin fixing plate (10).

6. The punching structure for a die-casting mold according to claim 1, characterized in that: The right part of the lower template (3) is provided with a notch (31), the side of the notch (31) is provided with a connecting fixing plate (9), and the middle part of the connecting fixing plate (9) is provided with a through hole (91) for avoiding the punching needle fixing plate (10).

7. The punching structure for a die-casting mold according to claim 1, characterized in that: The right part of the upper template (1) is provided with a mounting groove (11) matching the first guide block (2).

8. The punching structure for a die-casting mold according to claim 1, characterized in that: The punching needle (4) is in a step shape, and comprises a fixed section (41) connected to the punching needle fixing plate (10), a transition section (42) is arranged on one side of the fixed section (41), a needle rod (43) is arranged on one side of the transition section (42), and a punching head (44) for punching holes is arranged on one side of the needle rod (43).

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