A casting mold for a curved rack track of a stair lift

Abstract

The present invention relates to a casting mold for a curved rack track of a stair lift chair, comprising an upper mold and a lower mold that cooperate with each other, a first arcuate groove is provided on the lower surface of the upper mold, a second arcuate groove is provided on the upper surface of the lower mold, the inner edges of the first arcuate groove and the second arcuate groove are respectively concavely formed to form a third arcuate groove and a fourth arcuate groove, the inner edges of the third arcuate groove and the fourth arcuate groove are respectively concavely formed to form a fifth arcuate groove and a sixth arcuate groove, the bottoms of the fifth arcuate groove and the sixth arcuate groove are both provided with tooth grooves for casting to form a rack; the side walls of the fifth arcuate groove and the sixth arcuate groove are both provided with A gates, and the lower surface of the upper mold and the upper surface of the lower mold are also provided with A runners connected to the A gates. Through this structure, the present invention can integrally mold and cast to form a curved rack track without the need to bend a straight track and a straight rack, and has the advantages of low production cost, high precision and high efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of casting moulds, and in particular relates to a casting mould for a curved rack track of a stair lift chair. Background Art

[0002] In the technical field of stair lift chairs, curved rails and racks are required, and the curved rails and racks need to be fixedly connected together. The existing method is to bend straight pipes and straight racks, which is difficult to bend and has low bending accuracy. In addition, the bent pipes and bent racks need to be welded together, which has low production efficiency. Summary of the invention

[0003] The present invention provides a casting mold for a curved rack track of a stair lift, wherein a first arcuate groove is arranged on the lower surface of an upper mold, a second arcuate groove is arranged on the upper surface of a lower mold, a third arcuate groove and a fourth arcuate groove are respectively formed at the inner edges of the first arcuate groove and the second arcuate groove, a fifth arcuate groove and a sixth arcuate groove are respectively formed at the inner edges of the third arcuate groove and the fourth arcuate groove, and tooth grooves are arranged at the bottoms of the fifth arcuate groove and the sixth arcuate groove. When the upper mold and the lower mold are molded together, the first arcuate groove, the third arcuate groove, The fifth arched groove is aligned with the second arched groove, the fourth arched groove and the sixth arched groove to form an arched mold cavity, and a gate A and a runner A are provided for pouring the metal flowing into the mold cavity. The cast product is a curved arched workpiece, and due to the setting of the above-mentioned tooth grooves, a rack is also formed on the product. In this way, the curved rack and track used for the lifting of the stair lift chair can be manufactured in one piece, the production cost is lower, the produced curved rack and track have higher precision, and the production efficiency is higher.

[0004] The present invention is realized by the following technical scheme: a casting mold for a curved rack track of a stair lift chair, comprising an upper mold and a lower mold that cooperate with each other, the lower surface of the upper mold is provided with a first arcuate groove, the upper surface of the lower mold is provided with a second arcuate groove that is aligned with and identical to the first arcuate groove, the inner edges of the first arcuate groove and the second arcuate groove are respectively recessed to form a third arcuate groove and a fourth arcuate groove that are aligned and identical, the inner edges of the third arcuate groove and the fourth arcuate groove are respectively recessed to form a fifth arcuate groove and a sixth arcuate groove that are aligned and identical, and the groove bottoms of the fifth arcuate groove and the sixth arcuate groove are both provided with tooth grooves for casting to form a rack;

[0005] A gate is arranged on the side walls of the fifth arcuate groove and the sixth arcuate groove, and an A runner connected with the A gate is also arranged on the lower surface of the upper mold and the upper surface of the lower mold.

[0006] Furthermore, in order to better realize the present invention, the lower surface of the upper mold is also provided with a seventh arched groove, and the upper surface of the lower mold is also provided with an eighth arched groove aligned with and identical to the seventh arched groove, the seventh arched groove is arranged parallel to the first arched groove and the curvature radius of the two are the same, and the groove walls of the seventh arched groove and the eighth arched groove are provided with B gates, and the lower surface of the upper mold and the upper surface of the lower mold are also provided with B runners connected to the B gates.

[0007] Furthermore, in order to better realize the present invention, risers are respectively provided at the outer groove wall edges of the first arched groove, the second arched groove, the seventh arched groove and the eighth arched groove.

[0008] Furthermore, in order to better implement the present invention, a circular column is provided at the bottom of the fourth arcuate groove, and the height of the circular column is equal to the distance between the bottom of the third arcuate groove and the fourth arcuate groove after mold closing.

[0009] Furthermore, in order to better realize the present invention, the lower surface of the upper mold is provided with a circular hole A, the upper surface of the lower mold is provided with a circular hole B coaxial with the circular hole A, and also includes a positioning guide column and a sleeve, the sleeve is cooperatively arranged in the circular hole A, the positioning guide column includes an upper cone and a lower cylinder, the cylinder is inserted in the circular hole B, and the cone is inserted in the sleeve.

[0010] Furthermore, in order to better implement the present invention, threaded holes are provided on the hole walls of the circular hole A and the circular hole B, and top screws are screwed into the threaded holes.

[0011] Furthermore, in order to better realize the present invention, both the upper die and the lower die are provided with material reduction notches, the material reduction notches on the upper die are provided on the inner side of the first arched groove, and the material reduction notches on the lower die are provided on the inner side of the second arched groove.

[0012] Furthermore, in order to better implement the present invention, an extension block is provided on the side wall of the material reduction notch, and the A flow channel is provided on the extension block.

[0013] Furthermore, in order to better implement the present invention, buckles for locking the upper mold and the lower mold together are also provided on the side walls of the upper mold and the lower mold.

[0014] Furthermore, in order to better implement the present invention, handles are provided on the side walls of the upper mold and the lower mold.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention provides a first arched groove on the lower surface of the upper mold, a second arched groove on the upper surface of the lower mold, and a third arched groove and a fourth arched groove are respectively formed on the inner edges of the first arched groove and the second arched groove, and a fifth arched groove and a sixth arched groove are respectively formed on the inner edges of the third arched groove and the fourth arched groove, and a tooth groove is provided at the bottom of the fifth arched groove and the sixth arched groove. When the upper mold and the lower mold are closed, the first arched groove, the third arched groove, and the fifth arched groove are respectively aligned with the second arched groove, the fourth arched groove, and the sixth arched groove to form an arched mold cavity, and a gate A and a runner A are also provided for pouring the metal flowing into the mold cavity. The poured product is a curved arched workpiece, and due to the setting of the above-mentioned tooth grooves, a rack is also formed on the product. In this way, the curved rack and the track used for the stair lift chair can be integrally formed and manufactured, the production cost is lower, the produced curved rack and track are higher in precision, and the production efficiency is higher;

[0017] (2) The lower surface of the upper mold in the present invention is also provided with a seventh arcuate groove, and the upper surface of the lower mold is also provided with an eighth arcuate groove. When the upper mold and the lower mold are closed, the seventh arcuate groove and the eighth arcuate groove will be aligned to form another arcuate mold cavity, and a B gate and a B runner are also provided. Through the arcuate mold cavity, another arcuate track independent of the above-mentioned product can be cast to form. In this way, the present invention can simultaneously cast a curved track with a curved rack and a track without a curved rack, which is more practical.

[0018] (3) The first arcuate groove, the second arcuate groove, the seventh arcuate groove and the eighth arcuate groove in the present invention are respectively provided with risers at the outer groove wall edges for storing part of the liquid metal and replenishing the metal when the casting is formed, so as to prevent the formation of shrinkage cavities, shrinkage, exhaust and slag accumulation on the casting;

[0019] (4) A round column is provided at the bottom of the fourth arcuate groove in the present invention, and the height of the round column is defined to be equal to the distance between the bottom of the third arcuate groove and the bottom of the fourth arcuate groove after mold closing, so that a through hole for passing a screw is formed at the connection portion between the arched rack and the arched rail on the produced casting to facilitate installation;

[0020] (5) The upper mold and the lower mold in the present invention are positioned by a positioning guide column detachably installed therebetween, so that the two can be accurately molded together and form an arched mold cavity thereon, and the upper portion of the positioning guide column is configured as a cone, so that the upper mold and the lower mold can be easily separated after the casting is formed;

[0021] (6) In the present invention, both the upper die and the lower die are provided with a material reduction notch, so that the material and weight of the upper die and the lower die can be reduced. An extension block is provided on the material reduction notch, and the above-mentioned A flow channel is defined to be provided on the extension block, so as to more conveniently inject the liquid metal into the die cavity;

[0022] (7) In the present invention, buckles are also provided on the side walls of the upper mold and the lower mold for firmly connecting the upper mold and the lower mold after mold closing, and handles are also provided on the side walls of the upper mold and the lower mold to facilitate the user to separate the upper mold and the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a casting mold for a curved rack track of a stair lift chair in the present invention;

[0025] Figure 2 yes Figure 1 An exploded view of a casting mold for a curved rack track of a stair lift chair is shown;

[0026] Figure 3 It is a schematic diagram of the installation structure of the upper mold and the buckle, handle and shaft sleeve on the upper mold in the present invention;

[0027] Figure 4 is a distribution diagram of the first arcuate groove, the third arcuate groove, the fifth arcuate groove, the seventh arcuate groove and the tooth groove of the upper mold in the present invention;

[0028] Figure 5 It is a schematic diagram of the installation structure of the lower mold and the handle, buckle and positioning guide pillar on the lower mold in the present invention;

[0029] Figure 6 is a distribution diagram of the second arcuate groove, the fourth arcuate groove, the sixth arcuate groove, the eighth arcuate groove and the tooth groove of the lower mold in the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the rack track in the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the track in the present invention.

[0032] In the figure, 1-upper die; 11-first arcuate groove; 12-third arcuate groove; 13-fifth arcuate groove; 14-seventh arcuate groove; 2-lower die; 21-second arcuate groove; 22-fourth arcuate groove; 23-sixth arcuate groove; 24-eighth arcuate groove; 101-tooth groove; 102-A flow channel; 103-B flow channel; 104-riser; 105-round column; 106-reduction notch; 107-extension block; 3-positioning guide column; 4-sleeve; 5-top screw; 6-buckle; 7-handle; 8-rack track; 9-track. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] The inner side mentioned in this embodiment refers to the side close to the curvature center of the arched structure, and the outer side refers to the side far from the curvature center of the arched structure.

[0035] Embodiment 1:

[0036] A casting mold for a curved rack track of a stair lift comprises an upper mold 1 and a lower mold 2 which cooperate with each other. A first arcuate groove 11 is arranged on the lower surface of the upper mold 1, and a second arcuate groove 21 which is aligned with and identical to the first arcuate groove 11 is arranged on the upper surface of the lower mold 2. Preferably, the longitudinal section shape of the first arcuate groove 11 and the second arcuate groove 21 is defined as a semicircle.

[0037] At the inner edges of the first arched groove 11 and the second arched groove 21, aligned and identical third arched groove 12 and fourth arched groove 22 are respectively recessed. Preferably, the longitudinal section of the third arched groove 12 and the fourth arched groove 22 is defined as a rectangle, and the depth of the third arched groove 12 and the fourth arched groove 22 is defined as less than the depth of the first arched groove 11 and the second arched groove 21. In addition, the curvature radius of the third arched groove 12 and the fourth arched groove 22 is defined as the same as that of the first arched groove 11 and the second arched groove 21, and they are parallel to each other.

[0038] In this embodiment, a fifth arched groove 13 and a sixth arched groove 23 are respectively recessed at the inner edges of the third arched groove 12 and the fourth arched groove 22. Preferably, the longitudinal sections of the fifth arched groove 13 and the sixth arched groove 23 are inverted trapezoidal shapes, and the depths of the fifth arched groove 13 and the sixth arched groove 23 are greater than the depths of the third arched groove 12 and the fourth arched groove 22 but less than the depths of the first arched groove 11 and the second arched groove 21. In addition, the curvature radii of the fifth arched groove 13 and the sixth arched groove 23 are the same as those of the first arched groove 11 and the second arched groove 21, and are parallel to each other.

[0039] In this way, after the upper mold and the lower mold are closed, the first arcuate groove 11, the third arcuate groove 12, and the fifth arcuate groove 13 are aligned with the second arcuate groove 21, the fourth arcuate groove 22, and the sixth arcuate groove 23 to form an arcuate mold cavity. A gate is also provided on the side wall (specifically the inner side) of the fifth arcuate groove 13 and the sixth arcuate groove 23, and an A runner 102 connected to the A gate is also provided on the lower surface of the upper mold 1 and the upper surface of the lower mold 2. In this way, the user can inject liquid metal into the above-mentioned arcuate mold cavity through the A runner 102 and the A gate. At this time, a casting with a longitudinal section roughly in the shape of a gourd is formed in one piece.

[0040] In this embodiment, tooth grooves 101 are provided at the bottom of the fifth arcuate groove 13 and the sixth arcuate groove 23 . Liquid metal condenses and solidifies in the tooth grooves 101 to form racks, which are combined with the casting to form rack tracks 8 .

[0041] In this way, the castings cast in the first arched groove 11 and the second arched groove 21 are a curved guide rail, and the castings cast in the third arched groove 12 and the fourth arched groove 22 are connecting parts, and the castings cast in the fifth arched groove 13, the sixth arched groove 23 and the tooth groove 101 are a curved rack, and the connecting parts connect the curved guide rail and the curved rack together to form the curved rack track 8 of the stair lift.

[0042] Through this structure, a higher-precision curved rack track 8 for a stair lift can be obtained without the need to bend and weld a straight track and a straight rack together. Therefore, it can be seen that the production cost and production efficiency of the curved rack track 8 for a stair lift produced by the present invention are higher than those of the prior art, and the resulting product has higher precision.

[0043] Embodiment 2:

[0044] This embodiment is further improved on the basis of the embodiment 1. In this embodiment, a seventh arcuate groove 14 is further provided on the lower surface of the upper mold 1, and an eighth arcuate groove 24 is further provided on the upper surface of the lower mold 2, which is aligned with and identical to the seventh arcuate groove 14. The curvature radius of the seventh arcuate groove 14 and the eighth arcuate groove 24 are respectively the same as the first arcuate groove 11 and the second arcuate groove 21, and the seventh arcuate groove 14 is arranged in parallel with the first arcuate groove 11, and the eighth arcuate groove 24 is arranged in parallel with the second arcuate groove 21. A B gate is further provided on the groove wall (specifically, the outer groove wall) of the seventh arcuate groove 14 and the eighth arcuate groove 24, and a B flow 103 connected to the B gate is further provided on the lower surface of the upper mold 1 and the upper surface of the lower mold 2. Most preferably, the longitudinal section shape of the seventh arcuate groove 14 and the eighth arcuate groove 24 is defined as a semicircle.

[0045] In this way, when the upper mold 1 and the lower mold 2 are closed, the seventh arcuate groove 14 and the eighth arcuate groove 24 will form an arcuate mold cavity with a circular longitudinal section, and it will be a mold cavity independent of the gourd-shaped mold cavity in Example 1. The casting formed by pouring in the arcuate mold cavity with a circular longitudinal section will be a solid arcuate track 9.

[0046] In this way, the present invention can produce two independent parts at the same time, one of which is a rack track 8 with an arcuate rack, and the other is an arcuate track 9 without an arcuate rack. Both tracks can be used when installing the stair lift chair, thereby making the present invention more practical and more efficient.

[0047] Embodiment 3:

[0048] This embodiment is further improved on the basis of Embodiment 2. In this embodiment, risers 104 are respectively provided at the outer groove wall edges of the first arched groove 11, the second arched groove 21, the seventh arched groove 14 and the eighth arched groove 24 for storing part of the liquid metal and replenishing the metal when the casting is formed to prevent the formation of shrinkage cavities, shrinkage, exhaust and slag accumulation on the casting.

[0049] Preferably, the shape of the riser 104 is defined as a block, and in particular, the gate B overlaps with the risers 104 of the seventh arcuate groove 14 and the eighth arcuate groove 24. After the curved track 9 and the rack track 8 are produced by the present invention, the block formed by the riser 104 needs to be removed manually.

[0050] Embodiment 4:

[0051] This embodiment is further improved on the basis of the embodiment 3. In this embodiment, a round column 105 is provided at the bottom of the fourth arcuate groove 22, and the diameter of the round column 105 is slightly smaller than the width of the fourth arcuate groove 12. The height of the round column 105 is equal to the distance between the bottom of the third arcuate groove 12 and the bottom of the fourth arcuate groove 22 after the mold is closed. In this way, a through hole will be formed on the connecting member of the produced rack rail 8 for passing the mounting screw, and the user does not need to drill holes on the rack rail 8.

[0052] Preferably, the number of the circular columns 105 is limited to plural, and they are arranged equidistantly along the fourth arcuate groove 22 .

[0053] Embodiment 5:

[0054] This embodiment is further improved on the basis of the above embodiment. In this embodiment, a positioning guide column 3 is detachably installed between the upper mold 1 and the lower mold 2, so that the user can more accurately mold the upper mold 1 and the lower mold 2 together, and align the first arcuate groove 11 and the second arcuate groove 21, the third arcuate groove 12 and the fourth arcuate groove 22, the fifth arcuate groove 13 and the sixth arcuate groove 23, and the seventh arcuate groove 14 and the eighth arcuate groove 24. Specifically, a circular hole A is provided on the lower surface of the upper mold 1, and a circular hole B coaxial with the circular hole A is provided on the upper surface of the lower mold 2. A sleeve 4 is installed in the circular hole A, and the positioning guide column 3 includes an upper cone and a lower cylinder. When installing, the cylinder is inserted into the circular hole B, and the cone is inserted into the sleeve 4. The arrangement of the cone and the sleeve 4 can facilitate the mold-joining guide of the upper mold 1 and the lower mold 2.

[0055] Preferably, the upper mold 1 and the lower mold 2 are both in the shape of square blocks, and a circular hole A is provided at each of the four corners of the upper mold 1, and a circular hole B is provided at each of the four corners of the lower mold 2. That is, positioning guide pins 3 are installed at the four corners of the upper mold 1 and the lower mold 2 in the present invention, so as to achieve better positioning effect of the upper mold 1 and the lower mold 2, and make the mold cavity formed after the two molds are combined more standard.

[0056] Furthermore, threaded holes are provided on the hole walls of the above-mentioned circular hole A and circular hole B, and top screws 5 are screwed into the threaded holes so as to fix the above-mentioned sleeve 4 in the circular hole A and fix the cylinder of the positioning guide column 3 in the circular hole B, thereby further improving the positioning and guiding effect.

[0057] Embodiment 6:

[0058] This embodiment is further improved on the basis of the embodiment 5. In this embodiment, a material reduction notch 106 is provided on both the upper die 1 and the lower die 2 to reduce the material used in the upper die 1 and the lower die 2 and reduce the weight of the upper die 1 and the lower die 2. Specifically, the material reduction notch 106 on the upper die 1 is provided on the inner side of the first arcuate groove 11, and the material reduction notch 106 on the lower die 2 is provided on the inner side of the second arcuate groove 21.

[0059] In the present embodiment, since the above-mentioned A gate is arranged on the inner side of the above-mentioned fifth arched groove 13 and the sixth arched groove 23, in order to enable the liquid metal to flow more smoothly into the mold cavity in Example 1, in the present embodiment, an extension block 107 is arranged on the side wall of the above-mentioned material reduction notch 106, and the above-mentioned A runner 102 is arranged on the extension block 107.

[0060] Embodiment 7:

[0061] The present embodiment is further improved on the basis of the above-mentioned embodiment. In the present embodiment, a buckle 6 for locking the upper mold 1 and the lower mold 2 together is further provided on the side walls of the upper mold 1 and the lower mold 2, so that there is a sufficiently large pressure in the above-mentioned mold cavity and the mold explosion can be prevented.

[0062] In addition, handles 7 are respectively provided on the side walls of the upper mold 1 and the lower mold 2 to facilitate the user to separate the upper mold 1 and the lower mold 2.

[0063] Embodiment 8:

[0064] The present embodiment is further improved on the basis of the above-mentioned embodiment. In the present embodiment, the upper surface of the above-mentioned lower mold 2 is limited to a small-amplitude curved surface, and the lower surface of the above-mentioned upper mold 1 is a small-amplitude curved surface adapted to the upper surface of the lower mold 2. In this way, the produced curved (bow-shaped) rack rails 8 and rails 9 have a certain disturbance to be more suitable for installation.

[0065] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A casting mold for the curved rack track of a stair lift chair. Features: The invention comprises an upper die and a lower die which cooperate with each other, wherein the lower surface of the upper die is provided with a first arcuate groove, the upper surface of the lower die is provided with a second arcuate groove which is aligned with and identical to the first arcuate groove, the castings cast in the first arcuate groove and the second arcuate groove are a curved guide rail, the inner edges of the first arcuate groove and the second arcuate groove are respectively recessed to form a third arcuate groove and a fourth arcuate groove which are aligned with and identical to each other, the castings cast in the third arcuate groove and the fourth arcuate groove are connecting parts, the inner edges of the third arcuate groove and the fourth arcuate groove are respectively recessed to form a fifth arcuate groove and a sixth arcuate groove which are aligned with and identical to each other, and the groove bottoms of the fifth arcuate groove and the sixth arcuate groove are both provided with tooth grooves which are cast to form racks; A gate is disposed on the side walls of the fifth arcuate groove and the sixth arcuate groove, and a flow channel A communicating with the gate A is disposed on the lower surface of the upper mold and the upper surface of the lower mold; The upper die and the lower die are both provided with a material reduction notch, the material reduction notch on the upper die is provided at the inner side of the first arcuate groove, and the material reduction notch on the lower die is provided at the inner side of the second arcuate groove; An extension block is arranged on the side wall of the material reduction notch, and the A flow channel is arranged on the extension block.

2. A casting mold for a curved rack track of a stair lift chair according to claim 1, Features: The lower surface of the upper mold is also provided with a seventh arcuate groove, and the upper surface of the lower mold is also provided with an eighth arcuate groove aligned with and identical to the seventh arcuate groove. The seventh arcuate groove is arranged parallel to the first arcuate groove and the two have the same curvature radius. B gates are arranged on the groove walls of the seventh arcuate groove and the eighth arcuate groove, and the lower surface of the upper mold and the upper surface of the lower mold are also provided with B runners connected to the B gates.

3. A casting mold for a curved rack track of a stair lift chair according to claim 2, Features: Riser heads are respectively arranged at the outer groove wall edges of the first arcuate groove, the second arcuate groove, the seventh arcuate groove and the eighth arcuate groove.

4. A casting mold for a curved rack track of a stair lift chair according to claim 3, Features: A round column is arranged at the bottom of the fourth arcuate groove, and the height of the round column is equal to the distance between the bottom of the third arcuate groove and the fourth arcuate groove after mold closing.

5. A casting mold for a curved rack track of a stair lift according to any one of claims 1 to 4, Features: The lower surface of the upper mold is provided with a circular hole A, and the upper surface of the lower mold is provided with a circular hole B coaxial with the circular hole A. It also includes a positioning guide column and a sleeve. The sleeve is arranged in the circular hole A. The positioning guide column includes an upper cone and a lower cylinder. The cylinder is inserted into the circular hole B, and the cone is inserted into the sleeve.

6. A casting mold for a curved rack track of a stair lift chair according to claim 5, Features: The hole walls of the A circular hole and the B circular hole are both provided with threaded holes, and top screws are screwed into the threaded holes.

7. A casting mold for a curved rack track of a stair lift according to any one of claims 1 to 4, Features: Buckles for locking the upper mold and the lower mold together are also arranged on the side walls of the upper mold and the lower mold.

8. A casting mold for a curved rack track of a stair lift according to any one of claims 1 to 4, Features: Handles are arranged on the side walls of the upper mold and the lower mold.

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