Ejection tool for demoulding moulding bed

Abstract

The ejection tool comprises a supporting cushion block and an ejection cushion block, a horizontal through groove is formed in the supporting cushion block in the horizontal direction and used for avoiding the ejection cushion block, the horizontal through groove penetrates through the upper bottom face and the lower bottom face of the supporting cushion block, and the ejection cushion block is installed in the horizontal through groove of the supporting cushion block in a matched mode. According to the invention, the existing equipment can be fully utilized, and the forge piece in the moulding bed can be easily, simply and conveniently ejected on equipment without a hydraulic ejection device.

Description

Technical Field

[0001] The present invention belongs to the technical field of free forging, and in particular relates to a tooling for demoulding a tire mold on a non-ejection device. Background Art

[0002] Free forging is a metal processing technology that uses impact force or pressure to make the metal deform freely between the upper and lower anvil surfaces to obtain the desired shape, size and certain mechanical properties. In the free forging process, sometimes a specific blank is forged by using a die to save raw materials and improve the consistency of the blank. However, for long-axis forgings, especially non-rotationally symmetrical long-axis forgings, due to factors such as small die draft angle and high local pressure, it is often difficult to demold after die forging, which seriously affects production efficiency. At present, some technologies have been tried to improve the demolding problem, but they each have the following shortcomings: (1) Increasing the draft angle of the die can facilitate demolding of the forging, but this will increase the weight of the raw material and the allowance for subsequent machining; (2) Applying lubricant in the mold cavity can reduce the difficulty of demolding, but this will greatly increase the workload of operators and thus reduce work efficiency; (3) Adding ejection hydraulic equipment can assist in demolding, but this requires the purchase of new equipment and tooling, which is costly. Summary of the invention

[0003] Based on the above-mentioned existing technical problems, the present invention provides an ejection tooling for demoulding a tire mold, which can make full use of existing equipment and can easily and conveniently eject forgings in a tire mold on equipment without a hydraulic ejection device.

[0004] The main technical solutions adopted in the present invention are: The invention discloses an ejection tooling for demoulding a tire mold, comprising a supporting pad and an ejection pad. The supporting pad is provided with a horizontal through groove in the horizontal direction for avoiding the ejection pad. The horizontal through groove runs through the upper and lower bottom surfaces of the supporting pad. The ejection pad is installed in the horizontal through groove of the supporting pad.

[0005] Preferably, the ejection pad includes an ejection rod and a support seat, and the ejection rod is vertically arranged on the support seat.

[0006] Preferably, the support pad includes an upper support pad and a lower support pad, and the upper support pad and the lower support pad are integrally formed up and down, the upper support pad is provided with a horizontal through groove I matching the ejection rod, and the lower support pad is provided with a horizontal through groove II matching the support seat, and the horizontal through groove I and the horizontal through groove II are connected up and down and integrally formed to form a horizontal through groove of the support pad.

[0007] Preferably, there is a gap between the outer peripheral surface of the ejection pad and the inner wall surface of the horizontal through groove of the support pad to facilitate removal.

[0008] Preferably, there is a gap between the outer circumferential surface of the ejection rod and the lower opening of the tire mold cavity to facilitate removal.

[0009] Preferably, the horizontal through slot II of the lower support pad has a width b 1-2 It should be larger than the width of the upper opening of the tire mold cavity to prevent bumps.

[0010] Preferably, the height h of the upper support pad is 1-1 <Height of lower support block h 1-2 .

[0011] Preferably, the thickness h of the lower support pad is 1-2 ≥Support seat thickness h 2-2 .

[0012] Preferably, the ejection pad height h2 is greater than the support pad height h1.

[0013] Preferably, when the ejection pad height h2 is equal to the support pad height h1, at least two positioning pins are provided on the support seat, and both positioning pins pass through the horizontal through slots on the support pad and cooperate with the pin holes on the tire mold for positioning and installation.

[0014] Beneficial effect: The present invention provides an ejection tooling for demolding a tire mold, which separates a supporting pad from an ejection pad from the bottom through a horizontal through groove, thereby forming a drop at the bottom of the tire mold, and then demolding is performed by the tire mold's own weight and hammer pressure. The operation is simple, and there is no need to add additional hydraulic ejection equipment, which greatly saves costs and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a top view of the ejection device of the present embodiment 1; Figure 2 is a front cross-sectional view of the ejection device of the present embodiment 1; Figure 3 It is a three-dimensional structural diagram of the ejection device of this embodiment 1; Figure 4 This is a schematic diagram before ejection of the present embodiment 1; Figure 5 This is a schematic diagram of the embodiment 1 after ejection; Figure 6 is a top view of the ejection device of the present embodiment 2; Figure 7 It is a front cross-sectional view of the ejection device of the present embodiment 2; Figure 8 is a three-dimensional structural diagram of the ejection device of this embodiment 2; Fig. 9This is a schematic diagram before ejection of the present embodiment 2; Fig.10 This is a schematic diagram of the ejection of the second embodiment; In the figure: supporting pad 1, upper supporting pad 1-1, lower supporting pad 1-2, ejector pad 2, ejector rod 2-1, supporting seat 2-2, positioning pin 2-3, horizontal through groove 3, horizontal through groove I 3-1, horizontal through groove II 3-2, tire mold 4, pin hole 4-1, hammer head 5, forging 6. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application. Example 1

[0017] like Figure 1-3 As shown, an ejection tooling for demolding a tire mold includes a supporting pad 1 and an ejection pad 2. The supporting pad 1 is provided with a horizontal through groove 1-1 along the horizontal direction for avoiding the ejection pad 2 and thus exiting the supporting pad. The horizontal through groove 1-1 runs through the upper and lower bottom surfaces of the supporting pad 1, and the ejection pad 2 is cooperatively installed in the horizontal through groove 1-1 of the supporting pad 1.

[0018] In this embodiment 1, the ejection pad 2 includes an ejection rod 2-1 and a support seat 2-2, and the ejection rod 2-1 is vertically arranged on the support seat 2-2.

[0019] The support pad 1 includes an upper support pad 1-1 and a lower support pad 1-2, and the upper support pad 1-1 and the lower support pad 1-2 are integrally formed up and down. The upper support pad 1-1 is provided with a horizontal through groove Ⅰ3-1 matching the ejector rod 2-1, and the lower support pad 1-2 is provided with a horizontal through groove Ⅱ3-2 matching the support seat 2-2. The horizontal through groove Ⅰ3-1 and the horizontal through groove Ⅱ3-2 are connected up and down and integrally formed to form the horizontal through groove 3 of the support pad 1.

[0020] In order to facilitate the removal of the support pad, a gap is designed between the outer circumference of the ejection pad 2 and the inner wall of the horizontal through groove 3 of the support pad 1, and a gap is designed between the outer circumference of the ejection rod 2-1 and the lower opening of the tire mold cavity.

[0021] In this embodiment 1, in order to allow the lower support block to accommodate the top of the forging during the downward pressing and ejecting process, the horizontal through groove II of the lower support block 1-2 has a width b 1-2 It should be larger than the width of the upper opening of the tire mold cavity to prevent bumps.

[0022] In this embodiment 1, in order to prevent the top of the forging from colliding with the lower support pad 1-2 during the downward pressing and ejecting process, the height h of the upper support pad is 1-1 <Height of lower support block h 1-2 .

[0023] In this embodiment 1, in order to ensure that the support pad bears the main pressure of the die during forging, the height of the lower support pad is h 1-2 ≥Support seat height h 2-2 .

[0024] In this embodiment 1, the height h2 of the ejector pad is greater than the support pad h1, which ensures that the upper end of the ejector rod 2-1 always stays in the tire mold cavity during production, and can play a positioning and guiding role.

[0025] Based on the ejection tooling for mold demoulding disclosed in this embodiment 1, the mold forging and ejection process of a high-temperature alloy bolt sleeve forging is specifically as follows: Step 1: If Figure 4 As shown, the ejector tool is placed on the free forging hammer anvil, the tire mold 4 is placed on the ejector tool, and the ejector rod 2-1 extends into the tire mold cavity, the insertion depth is h2-h1, and there is a gap with the lower opening of the tire mold cavity, which is convenient for ejection; Step 2: The hammer head 5 falls vertically, and the forging 6 is formed in the die 4.

[0026] Step 3: If Figure 5 As shown, the hammer 5 is lifted, the support block 1 is taken out horizontally and placed above the mold 4 (the horizontal through groove II3-2 of the lower support block 1-2 is set corresponding to the top of the forging), the hammer 5 falls, and under the weight of the mold 4 and the pressure of the hammer 5, the mold 4 moves downward 1-1 The forging 6 is ejected from the die 4. At this time, there is still a distance (h) between the top of the forging 6 and the lower support pad 1-2. 1-2 -h 1-1 ) gap, and the horizontal through slot II width b of the lower support pad 1-2 1-2 > The width of the forging head 6 can effectively avoid bumps. Example 2

[0027] For some tire molds with a certain height, if the ejector rod 2-1 extends into the tire mold cavity during molding, the forging height will be insufficient (that is, the ejector pad height h2 is equal to the support pad h1). Figure 6-8As shown, in this embodiment 2, on the basis of embodiment 1, at least two positioning pins 2-3 are provided on the support seat 2-2, and both positioning pins 2-3 pass through the horizontal through slot 3 (horizontal through slot I3-1 in this embodiment 2) on the support pad 1, and are positioned and installed in coordination with the pin hole 4-1 on the tire mold 4, playing a positioning and guiding role. In this embodiment 2, the gap between the pin hole 4-1 and the positioning pin 2-3 is smaller than the gap between the outer peripheral surface of the ejection rod 2-1 and the lower opening of the tire mold cavity, so as to ensure that the ejection step proceeds smoothly. In this embodiment 2, the length of the horizontal through slot 3 is determined by the position of the positioning pin 2-3 and the ejection pad 2 that need to be avoided, and it is only necessary to avoid the positioning pin 2-3 and the ejection pad 2, and the upper support pad 1-1 and the lower support pad 1-2 are connected as a whole.

[0028] Based on the ejection tooling for mold demoulding disclosed in this embodiment 2, the mold forging (the upper end surface of the ejection pad 2 is flush with the lower end surface of the mold 4) and the ejection process of a forging are as follows: Step 1: If Fig. 9 As shown, the ejector tool is placed on the free forging hammer anvil, the tire mold 4 is placed on the ejector tool, and the positioning pin 2-3 extends into the tire mold cavity and has a certain gap with the pin hole 4-1; Step 2: The hammer head 5 falls vertically, and the forging 6 is formed in the mold.

[0029] Step 3: If Fig.10 As shown, the hammer 5 is lifted, the support pad 1 is taken out horizontally and placed above the tire mold 4, the hammer 5 falls, and under the weight of the tire mold and the pressure of the hammer, the tire mold 4 moves downward. 1-1 The forging 6 is ejected from the die by a certain distance (i.e. the height of the upper support pad).

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An ejection tool for demoulding a tire mold, characterized in that: It comprises a supporting pad and an ejecting pad. The supporting pad is provided with a horizontal through groove in the horizontal direction for avoiding the ejecting pad. The horizontal through groove runs through the upper and lower bottom surfaces of the supporting pad. The ejecting pad is installed in the horizontal through groove of the supporting pad.

2. The ejection tooling for demoulding a tire mold according to claim 1, characterized in that: The ejection pad includes an ejection rod and a support seat, and the ejection rod is vertically arranged on the support seat.

3. The ejection tooling for demoulding a tire mold according to claim 2, characterized in that: The support pad includes an upper support pad and a lower support pad, and the upper support pad and the lower support pad are integrally formed up and down. The upper support pad is provided with a horizontal through groove I that matches the ejection rod, and the lower support pad is provided with a horizontal through groove II that matches the support seat. The horizontal through groove I and the horizontal through groove II are connected up and down and are integrally formed to form a horizontal through groove of the support pad.

4. The ejection tooling for demoulding a tire mold according to claim 1, characterized in that: There is a gap between the outer peripheral surface of the ejection pad and the inner wall surface of the horizontal through groove of the support pad, which is convenient for removal.

5. The ejection tooling for demoulding a tire mold according to claim 3, characterized in that: There is a gap between the outer peripheral surface of the ejection rod and the lower opening of the tire mold cavity, which is convenient for taking out.

6. The ejection tool for demoulding a tire mold according to claim 3, characterized in that: The width b of the horizontal through groove II of the lower supporting pad 1-2 It should be larger than the width of the upper opening of the tire mold cavity to prevent bumps.

7. The ejection tool for demoulding a tire mold according to claim 3, characterized in that: The height h of the upper support pad 1-1 <Height of lower support block h 1-2 .

8. The ejection tool for demoulding a tire mold according to claim 3, characterized in that: The thickness of the lower support pad h 1-2 ≥Support seat thickness h 2-2 .

9. The ejection tool for demoulding a tire mold according to claim 1, characterized in that: The ejection pad height h2 is greater than the support pad height h1.

10. The ejection tooling for demoulding a tire mold according to claim 2, characterized in that: When the height h2 of the ejection pad is equal to the height h1 of the support pad, at least two positioning pins are provided on the support seat, and both positioning pins pass through the horizontal through slots on the support pad and cooperate with the pin holes on the tire mold for positioning and installation.

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